[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Bug Watch Updater]

** Changed in: lua-lpeg (Debian)
   Status: New => Fix Released

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Launchpad Bug Tracker]

This bug was fixed in the package lua-lpeg - 1.0.0-2ubuntu0.19.04.1

---
lua-lpeg (1.0.0-2ubuntu0.19.04.1) disco; urgency=medium

  * d/p/stop-hascaptures-recursion.patch: Fix infinite recursion in
hascaptures() (LP: #1580385)

 -- Victor Tapia   Wed, 02 Oct 2019 17:49:19
+0200

** Changed in: lua-lpeg (Ubuntu Disco)
   Status: Fix Committed => Fix Released

** Changed in: lua-lpeg (Ubuntu Bionic)
   Status: Fix Committed => Fix Released

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Launchpad Bug Tracker]

This bug was fixed in the package lua-lpeg - 1.0.0-2ubuntu0.18.04.1

---
lua-lpeg (1.0.0-2ubuntu0.18.04.1) bionic; urgency=medium

  * d/p/stop-hascaptures-recursion.patch: Fix infinite recursion in
hascaptures() (LP: #1580385)

 -- Victor Tapia   Wed, 02 Oct 2019 17:49:19
+0200

** Changed in: lua-lpeg (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Launchpad Bug Tracker]

This bug was fixed in the package lua-lpeg - 0.12.2-1ubuntu1

---
lua-lpeg (0.12.2-1ubuntu1) xenial; urgency=medium

  * d/p/stop-hascaptures-recursion.patch: Fix infinite recursion in
hascaptures() (LP: #1580385)

 -- Victor Tapia   Wed, 02 Oct 2019 17:49:19
+0200

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Launchpad Bug Tracker]

This bug was fixed in the package lua-lpeg - 1.0.0-2ubuntu0.19.10.1

---
lua-lpeg (1.0.0-2ubuntu0.19.10.1) eoan; urgency=medium

  * d/p/stop-hascaptures-recursion.patch: Fix infinite recursion in
hascaptures() (LP: #1580385)

 -- Victor Tapia   Wed, 02 Oct 2019 17:49:19
+0200

** Changed in: lua-lpeg (Ubuntu Eoan)
   Status: Fix Committed => Fix Released

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Mathew Hodson]

** Bug watch removed: Debian Bug tracker #944360
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944360

** Bug watch removed: github.com/nmap/nmap/issues #237
   https://github.com/nmap/nmap/issues/237

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

#VERIFICATION EOAN

Running the following script:

$ cat repro.lua
#!/usr/bin/env lua
lpeg = require "lpeg"

p = lpeg.C(-lpeg.P{lpeg.P'x' * lpeg.V(1) + lpeg.P'y'})
p:match("xx")


- With the current version:

$ dpkg -l|grep lua-lpeg
ii  lua-lpeg:amd64   1.0.0-2 amd64
LPeg library for the Lua language

$ ./repro.lua
[1]4168 segmentation fault (core dumped)  ./repro.lua

nmap segfaults too after a few runs (removing the service fingerprint
first as mentioned in the comment #11):

$ count=1; while true; do nmap -sV 192.168.1.114 -Pn > /dev/null && 
((count+=1)) || break; done; echo $count
7


- With the version in -proposed the script works as expected:

$ dpkg -l | grep lua-lpeg
ii  lua-lpeg:amd64   1.0.0-2ubuntu0.19.10.1  amd64
LPeg library for the Lua language

$ ./repro.lua

$ echo $?
0

nmap works too (was manually stopped after 300+ runs):

$ count=1; while true; do nmap -sV 192.168.1.114 -Pn > /dev/null &&
((count+=1)) || break; done; echo $count

$ echo $count
383

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

#VERIFICATION XENIAL

Running the following script:

$ cat repro.lua
#!/usr/bin/env lua
lpeg = require "lpeg"

p = lpeg.C(-lpeg.P{lpeg.P'x' * lpeg.V(1) + lpeg.P'y'})
p:match("xx")


- With the current version:

$ dpkg -l | grep lua-lpeg
ii  lua-lpeg:amd64   0.12.2-1   
amd64LPeg library for the Lua language

$ ./repro.lua
Segmentation fault (core dumped)

nmap segfaults too after a few runs:

$ count=1; while true; do nmap -sV 192.168.1.114 -Pn > /dev/null && 
((count+=1)) || break; done; echo $count
Segmentation fault (core dumped)
2


- With the version in -proposed the script works as expected:

$ dpkg -l | grep lua-lpeg
ii  lua-lpeg:amd64   0.12.2-1ubuntu1
amd64LPeg library for the Lua language

$ ./repro.lua
$ echo $?
0

nmap works (manually stopped):

$ count=1; while true; do nmap -sV 192.168.1.114 -Pn > /dev/null && 
((count+=1)) || break; done; echo $count
$ echo $count
179

** Tags removed: verification-needed verification-needed-bionic 
verification-needed-disco verification-needed-eoan verification-needed-xenial
** Tags added: verification-done verification-done-bionic 
verification-done-disco verification-done-eoan verification-done-xenial

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

#VERIFICATION BIONIC

Running the following script:

$ cat repro.lua
#!/usr/bin/env lua
lpeg = require "lpeg"

p = lpeg.C(-lpeg.P{lpeg.P'x' * lpeg.V(1) + lpeg.P'y'})
p:match("xx")


- With the current version:

$ dpkg -l|grep lua-lpeg
ii  lua-lpeg:amd64   1.0.0-2 amd64
LPeg library for the Lua language

$ ./repro.lua
Segmentation fault (core dumped)

In this case nmap works because it's using an old internal version of
lua-lpeg (see comment #11)


- With the version in -proposed the script works as expected:

$ dpkg -l | grep lua-lpeg
ii  lua-lpeg:amd64 1.0.0-2ubuntu0.18.04.1 amd64 
   LPeg library for the Lua language
$ ./repro.lua
$ echo $?
0

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

#VERIFICATION DISCO

Running the following script:

$ cat repro.lua
#!/usr/bin/env lua
lpeg = require "lpeg"

p = lpeg.C(-lpeg.P{lpeg.P'x' * lpeg.V(1) + lpeg.P'y'})
p:match("xx")


- With the current version:

$ dpkg -l|grep lua-lpeg
ii  lua-lpeg:amd64   1.0.0-2 amd64
LPeg library for the Lua language

$ ./repro.lua
[1]1119 segmentation fault (core dumped)  ./repro.lua

In this case nmap works because it's using an old internal version of
lua-lpeg (see comment #11)


- With the version in -proposed the script works as expected:

$ dpkg -l | grep lua-lpeg  
ii  lua-lpeg:amd64   1.0.0-2ubuntu0.19.04.1 amd64   
 LPeg library for the Lua language

$ ./repro.lua

$ echo $?
0

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Łukasz Zemczak]

Also, a small note: in the future I would appreciate a bit more analysis
regarding regression potential. It's good to know the overall assessment
(like, "low") and the nature of the fix, but for the future it's also
good to write down any possible areas where we could anticipate
regressions caused by the changes introduced by the bugfix. This
requires and additional thought exercise, looking at the patches and
trying to figure out what could theoretically go wrong. Bugfixes modify
some code, which can accidentally break something - and this is
something we'd want to know more about.

Thank you!

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Łukasz Zemczak]

Hello errors.ubuntu.com, or anyone else affected,

Accepted lua-lpeg into disco-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/lua-
lpeg/1.0.0-2ubuntu0.19.04.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-disco to verification-done-disco. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-disco. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: lua-lpeg (Ubuntu Disco)
   Status: In Progress => Fix Committed

** Tags added: verification-needed-disco

** Changed in: lua-lpeg (Ubuntu Bionic)
   Status: In Progress => Fix Committed

** Tags added: verification-needed-bionic

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Łukasz Zemczak]

Hello errors.ubuntu.com, or anyone else affected,

Accepted lua-lpeg into eoan-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/lua-
lpeg/1.0.0-2ubuntu0.19.10.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-eoan to verification-done-eoan. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-eoan. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: lua-lpeg (Ubuntu Eoan)
   Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-eoan

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

I also reported a LP bug about the lua-lpeg modernisation:

LP:
https://bugs.launchpad.net/debian/+source/lua-lpeg/+bug/1851854

Debian:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944360

- Eric

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

[sts-sponsor]

Sponsored for E, D, B & X. Packages are now waiting in their respectives
upload queues for approval in order to start building in -proposed for
the testing phase of the SRU.

Thanks again Victor

- Eric

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

Another note on the focal package of lua-lpeg ... (and this also implies
to debian) the src package still uses v7 debhelper compat version which
is 11 years old and obviously deprecated nowadays.

I have reported a bug against lua-lpeg debian as follows:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944360

If no action from debian, I'll try to spend some time fixing it (if time
permit)

I deally, I would like to see lua-lpeg being modernize before we enter
the freeze schedule with a modern debhelper version and fixing any
relevant lintian report warning.

** Bug watch added: Debian Bug tracker #944360
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944360

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

** Changed in: lua-lpeg (Ubuntu Eoan)
 Assignee: (unassigned) => Victor Tapia (vtapia)

** Changed in: lua-lpeg (Ubuntu Disco)
 Assignee: (unassigned) => Victor Tapia (vtapia)

** Changed in: lua-lpeg (Ubuntu Bionic)
 Assignee: (unassigned) => Victor Tapia (vtapia)

** Changed in: lua-lpeg (Ubuntu Xenial)
 Assignee: (unassigned) => Victor Tapia (vtapia)

** Changed in: lua-lpeg (Ubuntu Xenial)
   Status: New => In Progress

** Changed in: lua-lpeg (Ubuntu Disco)
   Status: New => In Progress

** Changed in: lua-lpeg (Ubuntu Bionic)
   Status: New => In Progress

** Changed in: lua-lpeg (Ubuntu Xenial)
   Importance: Undecided => Medium

** Changed in: lua-lpeg (Ubuntu Disco)
   Importance: Undecided => Medium

** Changed in: lua-lpeg (Ubuntu Bionic)
   Importance: Undecided => Medium

** Changed in: lua-lpeg (Ubuntu Eoan)
   Importance: Undecided => Medium

** Changed in: lua-lpeg (Ubuntu Eoan)
   Status: New => In Progress

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Patch added: "xenial.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/lua-lpeg/+bug/1580385/+attachment/5303500/+files/xenial.debdiff

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Patch added: "bionic.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/lua-lpeg/+bug/1580385/+attachment/5303499/+files/bionic.debdiff

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Patch added: "eoan.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/lua-lpeg/+bug/1580385/+attachment/5303496/+files/eoan.debdiff

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Patch added: "disco.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/lua-lpeg/+bug/1580385/+attachment/5303497/+files/disco.debdiff

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Launchpad Bug Tracker]

This bug was fixed in the package lua-lpeg - 1.0.0-2ubuntu1

---
lua-lpeg (1.0.0-2ubuntu1) focal; urgency=medium

  * d/p/stop-hascaptures-recursion.patch: Fix infinite recursion in
hascaptures(). (LP: #1580385)

 -- Victor Tapia   Wed, 02 Oct 2019 17:49:19
+0200

** Changed in: lua-lpeg (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

** Changed in: lua-lpeg (Ubuntu)
   Status: In Progress => Fix Committed

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

[sts-sponsor]

Sponsored in focal.

# Nitpick:
I have appended the changelog to add the LP bug.

# Upstream project have no vcs, therefore no commit available. Upstream
just release tarballs.

# No merge/sync needed. Debian and Ubuntu package are already at same
version level.

# Since this is easy to reproduce using the given repro.lua program, I took 
some time to double-check before final upload:
---

-> With current pkg found in the archive
$ ./repro.lua 
Segmentation fault (core dumped)


-> With the just got sponsored pkg
$ ./repro.lua 
root@focal:/tmp# 

no segfault nor other error ^

# SRU note
As an fyi, for the continuity (SRU), since most versions are identical, please 
use the following approach:

From:
 
 lua-lpeg | 1.0.0-2  | bionic/universe  
 lua-lpeg | 1.0.0-2  | disco/universe   
 lua-lpeg | 1.0.0-2  | eoan
 lua-lpeg | 1.0.0-2  | focal

To :
 
 lua-lpeg | 1.0.0-2ubuntu0.18.04.1  | bionic/universe  
 lua-lpeg | 1.0.0-2ubuntu0.19.04.1  | disco/universe   
 lua-lpeg | 1.0.0-2ubuntu0.19.10.1  | eoan
 lua-lpeg | 1.0.0-2ubuntu1  | focal  


Thanks Victor for your contribution !

- Eric

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

** Changed in: lua-lpeg (Ubuntu)
   Importance: Undecided => Critical

** Changed in: lua-lpeg (Ubuntu)
   Importance: Critical => Medium

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Bug Watch Updater]

** Changed in: lua-lpeg (Debian)
   Status: Unknown => New

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Ubuntu Foundations Team Bug Bot]

The attachment "focal.debdiff" seems to be a debdiff.  The ubuntu-
sponsors team has been subscribed to the bug report so that they can
review and hopefully sponsor the debdiff.  If the attachment isn't a
patch, please remove the "patch" flag from the attachment, remove the
"patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe
the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issue please contact him.]

** Tags added: patch

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

** Changed in: lua-lpeg (Ubuntu)
 Assignee: (unassigned) => Victor Tapia (vtapia)

** Changed in: lua-lpeg (Ubuntu)
   Status: New => In Progress

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Bug watch added: Debian Bug tracker #942031
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942031

** Also affects: lua-lpeg (Debian) via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942031
   Importance: Unknown
   Status: Unknown

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Patch added: "focal.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/lua-lpeg/+bug/1580385/+attachment/5303261/+files/focal.debdiff

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** No longer affects: nmap (Ubuntu)

** No longer affects: nmap (Ubuntu Xenial)

** Also affects: lua-lpeg (Ubuntu Eoan)
   Importance: Undecided
   Status: New

** Also affects: lua-lpeg (Ubuntu Bionic)
   Importance: Undecided
   Status: New

** Also affects: lua-lpeg (Ubuntu Focal)
   Importance: Undecided
   Status: New

** Also affects: lua-lpeg (Ubuntu Disco)
   Importance: Undecided
   Status: New

** No longer affects: lua-lpeg (Ubuntu Focal)

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Description changed:

+ [Impact]
+ 
+ Under certain conditions, lpeg will crash while walking the pattern tree
+ looking for TCapture nodes.
+ 
+ [Test Case]
+ 
+ The reproducer, taken from an upstream discussion (link in "Other
+ info"), is:
+ 
+ $ cat repro.lua
+ #!/usr/bin/env lua
+ lpeg = require "lpeg"
+ 
+ p = lpeg.C(-lpeg.P{lpeg.P'x' * lpeg.V(1) + lpeg.P'y'})
+ p:match("xx")
+ 
+ The program crashes due to a hascaptures() infinite recursion:
+ 
+ $ ./repro.lua
+ Segmentation fault (core dumped)
+ 
+ (gdb) bt -25
+ #523984 0x77a3743c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523985 0x77a3743c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523986 0x77a3743c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523987 0x77a3743c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523988 0x77a3743c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523989 0x77a3743c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523990 0x77a3815c in ?? () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523991 0x77a388e3 in compile () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523992 0x77a36fab in ?? () from 
/usr/lib/x86_64-linux-gnu/lua/5.2/lpeg.so
+ #523993 0xfd1e in ?? ()
+ #523994 0x5556a5fc in ?? ()
+ #523995 0x555600c8 in ?? ()
+ #523996 0xf63f in ?? ()
+ #523997 0x5556030f in ?? ()
+ #523998 0xdc91 in lua_pcallk ()
+ #523999 0xb896 in ?? ()
+ #524000 0xc54b in ?? ()
+ #524001 0xfd1e in ?? ()
+ #524002 0x55560092 in ?? ()
+ #524003 0xf63f in ?? ()
+ #524004 0x5556030f in ?? ()
+ #524005 0xdc91 in lua_pcallk ()
+ #524006 0xb64b in ?? ()
+ #524007 0x77c94bbb in __libc_start_main (main=0xb5f0, argc=2, 
argv=0x7fffe6d8, init=, fini=, 
rtld_fini=, stack_end=0x7fffe6c8)
+ at ../csu/libc-start.c:308
+ #524008 0xb70a in ?? ()
+ 
+ The expected behavior is to have the program finish normally
+ 
+ [Regression potential]
+ 
+ Low, this is a backport from upstream and only limits the infinite recursion 
in a scenario where it shouldn't happen to begin with (TCapture node search).
+ [Other info]
+ 
+ This was fixed upstream in 1.0.1 by stopping the recursion in TCall
+ nodes and controlling that TRule nodes do not follow siblings (sib2)
+ 
+ The upstream discussion can be found here:
+ http://lua.2524044.n2.nabble.com/LPeg-intermittent-stack-exhaustion-
+ td7674831.html
+ 
+ My analysis can be found here:
+ http://pastebin.ubuntu.com/p/n4824ftZt9/plain/
+ 
+ [Original description]
+ 
  The Ubuntu Error Tracker has been receiving reports about a problem
  regarding nmap.  This problem was most recently seen with version
  7.01-2ubuntu2, the problem page at
  https://errors.ubuntu.com/problem/5e852236a443bab0279d47c8a9b7e55802bfb46f
  contains more details.

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Also affects: lua-lpeg (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

I've been able to finish the analysis of the bug, this is the summary:

- nmap includes an old version of lpeg (0.12 ~Trusty/oldoldstable) in all 
releases (all files merged in lpeg.c)
- Debian introduced a patch that links nmap's build against an external 
lua-lpeg lib because lpeg is properly packaged (a hygiene measure according to 
Debian's maintainer)
- Upstream introduced a patch, available in B+, that fixed a FTBFS regarding 
lpeg (undefined reference for luaopen_lpeg())
- The version of lua-lpeg in X/B/E has a recursion error
- When both the upstream commit and the external linking patch are available, 
local lpeg is used

This results in:

- X fails because it uses lua-lpeg (no upstream commit in the build)
- B works because it uses local lpeg (upstream commit available)
- E is a special case in my reproducer: the debian patch removes #include 
"lpeg.c" so it uses the external lua-lpeg, but works because the scanned 
service has a fingerprint and avoids the crash. Removing the fingerprint from 
/usr/share/nmap/nmap-service-probes makes it crash as expected

The best way to fix this bug will be to fix the recursion error in lua-
lpeg so nmap would work regardless of the version of lua-lpeg it uses.

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

# REPRODUCER: Install LXD, make it available over the network and run
nmap against its ip:

# lxd init
Do you want to configure a new storage pool (yes/no) [default=yes]? no
Would you like LXD to be available over the network (yes/no) [default=no]? yes
Address to bind LXD to (not including port) [default=all]: 
Port to bind LXD to [default=8443]: 
Trust password for new clients: 
Again: 
Do you want to configure the LXD bridge (yes/no) [default=yes]? no
LXD has been successfully configured.

$ sudo netstat -anp | grep 8443
tcp6   0  0 :::8443 :::*LISTEN  
817/lxd 

$ while true; do nmap -sV localhost -Pn -d 2>&1 || break; done

Starting Nmap 7.01 ( https://nmap.org ) at 2019-10-02 18:33 CEST
PORTS: Using top 1000 ports found open (TCP:1000, UDP:0, SCTP:0)
--- Timing report ---
  hostgroups: min 1, max 10
  rtt-timeouts: init 1000, min 100, max 1
  max-scan-delay: TCP 1000, UDP 1000, SCTP 1000
  parallelism: min 0, max 0
  max-retries: 10, host-timeout: 0
  min-rate: 0, max-rate: 0
-
NSE: Using Lua 5.2.
NSE: Arguments from CLI: 
NSE: Loaded 35 scripts for scanning.
mass_rdns: Using DNS server 192.168.11.1
Initiating Connect Scan at 18:33
Scanning localhost (127.0.0.1) [1000 ports]
Discovered open port 22/tcp on 127.0.0.1
Discovered open port 8443/tcp on 127.0.0.1
Completed Connect Scan at 18:33, 0.01s elapsed (1000 total ports)
Overall sending rates: 67769.04 packets / s.
Initiating Service scan at 18:33
Scanning 2 services on localhost (127.0.0.1)
Completed Service scan at 18:35, 82.59s elapsed (2 services on 1 host)
NSE: Script scanning 127.0.0.1.
NSE: Starting runlevel 1 (of 1) scan.
Initiating NSE at 18:35
NSE: Starting rpc-grind against localhost (127.0.0.1:8443).
NSE: Starting http-server-header against localhost (127.0.0.1:8443).
Segmentation fault (core dumped)

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** No longer affects: nmap (Ubuntu Eoan)

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Also affects: nmap (Ubuntu Eoan)
   Importance: High
   Status: Confirmed

** Changed in: nmap (Ubuntu Eoan)
 Assignee: (unassigned) => Victor Tapia (vtapia)

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

I think I found the root cause of this issue. 0003-Link-against-lua-
lpeg.patch tries to fix a linking error related to the function named
luaopen_lpeg(), making nmap use the luaopen_lpeg() in lua-lpeg instead
of the local function declared in lpeg.c (which are slightly different).
The original linking issue was addressed upstream[1] by setting the
function as extern[2] somewhere between 7.0.1 and 7.10, and that's why
newer releases do not see this bug. I have a PPA[3] prepared to start
testing, replacing 0003-Link-against-lua-lpeg.patch with the upstream
fix.

[1] https://github.com/nmap/nmap/issues/237
[2] https://github.com/nmap/nmap/commit/9bcc6c09e22e3a32e8f89a13afee5a9a77b92b62
[3] https://launchpad.net/~vtapia/+archive/ubuntu/sf238253


** Bug watch added: github.com/nmap/nmap/issues #237
   https://github.com/nmap/nmap/issues/237

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Victor Tapia]

** Changed in: nmap (Ubuntu Xenial)
 Assignee: Dan Streetman (ddstreet) => Victor Tapia (vtapia)

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Title:
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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Bryce Harrington]

The packaging changes between xenial and bionic don't seem to involve
lua-lpeg, and notably the patch 0003-Link-against-lua-lpeg.patch is
included in both (the patch is refreshed for lua5.3 in bionic, so the
patch isn't identical).

The diff of CHANGELOG between 7.01 and 7.60 doesn't indicate a mention
of lua-lpeg or a fix of a recursion error, and none of the mentions of
lua fixes seem to match this error.  There's a lot of changes between
these two versions, though.  I'm guessing a bisection search would be
the most straightforward way to identify the fix?

ddstreet, when you tested against the bionic lua-lpeg, were you testing
with lua5.2 or lua5.3?  Presumably you've ruled out lua as a variable?

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Dan Streetman]

I confirmed that xenial nmap still segfaults when the bionic version of
lua-lpeg, so it looks like some commit in nmap between xenial and bionic
fixes this, not any change in lua-lpeg.

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Dan Streetman]

While the lua-lpeg code's careless use of recursion is certainly not
good, I'm not sure if it is causing the current problem; I suspect it
may be nmap introducting a problem in the tree that causes the infinite
recursion.  I've applied almost all the patches to bring lua_lpeg up to
the bionic version, and it's still reproducable; I'll try with the full
bionic lua_lpeg version to make sure the issue is in nmap (or at least,
being triggered by xenial version of nmap).

** Also affects: nmap (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: nmap (Ubuntu Xenial)
 Assignee: (unassigned) => Dan Streetman (ddstreet)

** Changed in: nmap (Ubuntu Xenial)
   Importance: Undecided => Low

** Changed in: nmap (Ubuntu Xenial)
   Status: New => In Progress

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Dan Streetman]

The backtrace start (taken from a patched lua_lpeg, so line numbers
won't match with latest released version):

(gdb) bt -40
#523468 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f58c) 
at lpcode.c:144
#523469 0x76e4026c in hascaptures (tree=tree@entry=0xd1f584) at 
lpcode.c:144
#523470 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f58c) 
at lpcode.c:144
#523471 0x76e4026c in hascaptures (tree=tree@entry=0xd1f584) at 
lpcode.c:144
#523472 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f58c) 
at lpcode.c:144
#523473 0x76e4026c in hascaptures (tree=tree@entry=0xd1f584) at 
lpcode.c:144
#523474 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f58c) 
at lpcode.c:144
#523475 0x76e4026c in hascaptures (tree=tree@entry=0xd1f584) at 
lpcode.c:144
#523476 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f58c) 
at lpcode.c:144
#523477 0x76e4026c in hascaptures (tree=tree@entry=0xd1f584) at 
lpcode.c:144
#523478 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f58c) 
at lpcode.c:144
#523479 0x76e4026c in hascaptures (tree=tree@entry=0xd1f584) at 
lpcode.c:144
#523480 0x76e4026c in hascaptures (tree=0xd1f57c, tree@entry=0xd1f5b4) 
at lpcode.c:144
#523481 0x76e4026c in hascaptures (tree=tree@entry=0xd1f5ac) at 
lpcode.c:144
#523482 0x76e410a4 in codecapture (fl=0x76e421c0 , tt=-1, 
tree=0xd1f5a4, compst=0x7fffcf10) at lpcode.c:720
#523483 codegen (compst=compst@entry=0x7fffcf10, tree=tree@entry=0xd1f5a4, 
opt=opt@entry=0, tt=tt@entry=-1, fl=fl@entry=0x76e421c0 ) at 
lpcode.c:905
#523484 0x76e41715 in codegrammar (compst=compst@entry=0x7fffcf10, 
grammar=grammar@entry=0xd1f4c4) at lpcode.c:850
#523485 0x76e41023 in codegen (compst=compst@entry=0x7fffcf10, 
tree=tree@entry=0xd1f4c4, opt=opt@entry=0, tt=tt@entry=-1, 
fl=fl@entry=0x76e421c0 ) at lpcode.c:907
#523486 0x76e4188e in compile (L=0x2050cd0, p=0xd1f4b8) at lpcode.c:977
#523487 0x76e3fdeb in lp_match (L=0x2050cd0) at lptree.c:1150
#523488 0x770508ed in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523489 0x7705c4ed in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523490 0x77050ae0 in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523491 0x7705026f in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523492 0x77050cc7 in lua_resume () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523493 0x77060f44 in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523494 0x770612b1 in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523495 0x770508ed in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523496 0x7705c4ed in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523497 0x77050c2e in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523498 0x7704cccb in lua_callk () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523499 0x004a5036 in run_main (L=0xca0cf0) at nse_main.cc:651
#523500 0x770508ed in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523501 0x77050c22 in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523502 0x7705026f in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523503 0x77050e71 in ?? () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523504 0x7704cd91 in lua_pcallk () from 
/usr/lib/x86_64-linux-gnu/liblua5.2.so.0
#523505 0x004a6524 in script_scan (targets=std::vector of length 1, 
capacity 100 = {...}, scantype=) at nse_main.cc:809
#523506 0x004535e0 in nmap_main (argc=argc@entry=3, 
argv=argv@entry=0x7fffe5a8) at nmap.cc:2121
#523507 0x0042ab9b in main (argc=3, argv=0x7fffe5a8) at main.cc:228

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

It has been brought to my attention that 'nmap -sV' randomly segfault in Xenial.
I was also able to reproduce the situation.

It seems to be caused by a stack exhaustion due to a hascaptures() being
called over and over.

GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
.
Find the GDB manual and other documentation resources online at:
.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/nmap...(no debugging symbols found)...done.
[New LWP 17917]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `nmap -sV '.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x7f8e05b3f257 in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
(gdb) bt
#0 0x7f8e05b3f257 in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#1 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#2 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#3 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#4 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#5 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#6 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#7 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#8 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#9 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#10 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#11 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#12 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#13 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#14 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2

#161459 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
..
#354107 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
...

0x7f8e05b3f253 <+51>:   lea 0x8(%rbx),%rdi
=> 0x7f8e05b3f257 <+55>:callq 0x7f8e05b3f220 
0x7f8e05b3f25c <+60>:   test %eax,%eax

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

It really seems to be a problem inside lua-lpeg (0.12.2-1) found in
Xenial, and seemed to have been fix (reading the upstream bug) in 1.0.0
found in Bionic and late.

Which also explain why when tried with Bionic the issue was not
reproducible.

# rmadison
 lua-lpeg | 0.12.2-1 | xenial   
 lua-lpeg | 1.0.0-2  | bionic/universe  
 lua-lpeg | 1.0.0-2  | disco/universe   
 lua-lpeg | 1.0.0-2  | eoan/universe

Reference:
http://lua.2524044.n2.nabble.com/LPeg-intermittent-stack-exhaustion-td7674831.html
 
https://github.com/nmap/nmap/pull/478

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Eric Desrochers]

It has been brought to my attention that 'nmap -sV' randomly segfault in Xenial.
I was also able to reproduce the situation.

It seems to be caused by a stack exhaustion due to a hascaptures() being
called over and over.

# gdb /usr/bin/nmap core.cic-1.domain.tld.1565764146.nmap.17917 
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
.
Find the GDB manual and other documentation resources online at:
.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/nmap...(no debugging symbols found)...done.
[New LWP 17917]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `nmap -sV 10.33.239.140'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x7f8e05b3f257 in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
(gdb) bt
#0 0x7f8e05b3f257 in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#1 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#2 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#3 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#4 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#5 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#6 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#7 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#8 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#9 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#10 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#11 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#12 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#13 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
#14 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2

#161459 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
..
#354107 0x7f8e05b3f25c in hascaptures () from 
/usr/lib/x86_64-linux-gnu/liblua5.2-lpeg.so.2
...


0x7f8e05b3f253 <+51>:   lea 0x8(%rbx),%rdi
=> 0x7f8e05b3f257 <+55>:callq 0x7f8e05b3f220 
0x7f8e05b3f25c <+60>:   test %eax,%eax

** Tags added: sts

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Alberto Salvia Novella]

** Changed in: nmap (Ubuntu)
   Importance: Undecided => High

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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[Bug 1580385] Re: /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: nmap (Ubuntu)
   Status: New => Confirmed

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Title:
  /usr/bin/nmap:11:hascaptures:hascaptures:hascaptures:hascaptures:hascaptures

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