[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2018-03-21 Thread Launchpad Bug Tracker 
This bug was fixed in the package systemd - 234-2ubuntu12.3

---
systemd (234-2ubuntu12.3) artful; urgency=medium

  [ Dimitri John Ledkov ]
  * Fix test-functions failing with Ubuntu units. LP: #1750608
  * tests: switch to using ext4 by default, instead of ext3. LP: #1750608
  * Fix kdump service not starting, due to systemd not loading dropins.
Cherrypick a fix from upstream. (LP: #1708409)
  * systemd-fsckd: Fix ADT tests to work on s390x too. (LP: #1736955)
  * netwokrd: add support for RequiredForOnline stanza. (LP: #1737570)
  * resolved.service: set DefaultDependencies=no (LP: #1734167)
  * systemd.postinst: enable persistent journal. (LP: #1618188)
  * core: add support for non-writable unified cgroup hierarchy for container 
support.
Rebase and de-fuzz. (LP: #1734410)
  * Prevent MemoryDenyWriteExecution policy bypass, by disallowing 
pkey_mprotect when mprotect is disallowed.
CVE-2017-15908 (LP: #1725348)
  * networkd: enable promote_secondaries on networkd managed dhcp links.
This fixes failing to renew DHCP lease, on networkd managed devices.
(LP: #1721223)

  [ Kleber Sacilotto de Souza ]
  * systemd-rfkill service times out when a new rfkill device is added
- rfkill-fix-erroneous-behavior-when-polling-the-udev-.patch: Comparing
udev_device_get_sysname(device) and sysname will always return true. We 
need to
check the device received from udev monitor instead.
- rfkill-fix-typo.patch: Fix typo in rfkill log message. (LP: #1734908)

 -- Dimitri John Ledkov   Tue, 20 Feb 2018 16:11:58
+

** Changed in: systemd (Ubuntu Artful)
   Status: Fix Committed => Fix Released

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Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Invalid
Status in systemd source package in Zesty:
  Won't Fix
Status in systemd source package in Artful:
  Fix Released
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  [Impact]

   * MemoryDenyWritePolicy can be bypassed by using a slightly different
  syscall.

  [Test Case]

   * Check that MemoryDenyWritePolicy, blocks pkey_mprotect as well as
  mprotect.

  [Regression Potential]

   * Upstream fix cherrypick, security vulnerability.

  [Other Info]
   
   * Original report

  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  Sincerely,
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2018-03-20 Thread Dimitri John Ledkov 
Using test software from pkeys(7) manpage, modified to use PROT_WRITE |
PROT_EXEC, created systemd unit that tries to use memory protection, and
started it as a systemd unit.

Thus calling:
status = pkey_mprotect(buffer, getpagesize(),
PROT_READ | PROT_WRITE | PROT_EXEC, pkey);
if (status == -1)
   errExit("pkey_mprotect");
fprintf(stderr, "about to read buffer again...\n");

$ systemctl cat test.service
# /etc/systemd/system/test.service
[Service]
MemoryDenyWriteExecute=true
ExecStart=/home/ubuntu/a.out

$ dpkg-query -W systemd
systemd 234-2ubuntu12.1

>From journal:
a.out[6763]: buffer contains: 69
a.out[6763]: about to read buffer again...

Is bad, since it is expected that MemoryDenyWriteExecute shall not allow
the pkey_mprotect call, and one should not see the "about to read buffer
again..." message.

Upgrading to:
$ dpkg-query -W systemd
systemd 234-2ubuntu12.3

Starting test.unit again, and journal now has:
a.out[17978]: buffer contains: 69
a.out[17978]: pkey_mprotect: Operation not permitted
systemd[1]: test.service: Main process exited, code=exited, status=1/FAILURE

Which is awesome =)


** Tags removed: verification-needed verification-needed-artful
** Tags added: verification-done verification-done-artful

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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Invalid
Status in systemd source package in Zesty:
  Won't Fix
Status in systemd source package in Artful:
  Fix Committed
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  [Impact]

   * MemoryDenyWritePolicy can be bypassed by using a slightly different
  syscall.

  [Test Case]

   * Check that MemoryDenyWritePolicy, blocks pkey_mprotect as well as
  mprotect.

  [Regression Potential]

   * Upstream fix cherrypick, security vulnerability.

  [Other Info]
   
   * Original report

  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  Sincerely,
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2018-02-22 Thread Brian Murray 
Hello Thomas, or anyone else affected,

Accepted systemd into artful-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/234-2ubuntu12.3 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-artful to verification-done-artful. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-artful. 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!

** Changed in: systemd (Ubuntu Artful)
   Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-artful

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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Invalid
Status in systemd source package in Zesty:
  Won't Fix
Status in systemd source package in Artful:
  Fix Committed
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  [Impact]

   * MemoryDenyWritePolicy can be bypassed by using a slightly different
  syscall.

  [Test Case]

   * Check that MemoryDenyWritePolicy, blocks pkey_mprotect as well as
  mprotect.

  [Regression Potential]

   * Upstream fix cherrypick, security vulnerability.

  [Other Info]
   
   * Original report

  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  Sincerely,
  Thomas IMBERT

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725348/+subscriptions

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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2018-02-20 Thread Dimitri John Ledkov 
** Description changed:

+ [Impact]
+ 
+  * MemoryDenyWritePolicy can be bypassed by using a slightly different
+ syscall.
+ 
+ [Test Case]
+ 
+  * Check that MemoryDenyWritePolicy, blocks pkey_mprotect as well as
+ mprotect.
+ 
+ [Regression Potential]
+ 
+  * Upstream fix cherrypick, security vulnerability.
+ 
+ [Other Info]
+  
+  * Original report
+ 
  Hello,
  
  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.
  
  The vulnerability is described in the attached PDF file.
  
- 
- Sincerely, 
+ Sincerely,
  Thomas IMBERT

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Invalid
Status in systemd source package in Zesty:
  Won't Fix
Status in systemd source package in Artful:
  In Progress
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  [Impact]

   * MemoryDenyWritePolicy can be bypassed by using a slightly different
  syscall.

  [Test Case]

   * Check that MemoryDenyWritePolicy, blocks pkey_mprotect as well as
  mprotect.

  [Regression Potential]

   * Upstream fix cherrypick, security vulnerability.

  [Other Info]
   
   * Original report

  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  Sincerely,
  Thomas IMBERT

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725348/+subscriptions

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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2018-02-20 Thread Dimitri John Ledkov 
** Changed in: systemd (Ubuntu Zesty)
   Status: New => Won't Fix

** Changed in: systemd (Ubuntu Xenial)
   Status: New => Invalid

** Changed in: systemd (Ubuntu Artful)
   Status: New => In Progress

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Invalid
Status in systemd source package in Zesty:
  Won't Fix
Status in systemd source package in Artful:
  In Progress
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-29 Thread Launchpad Bug Tracker 
This bug was fixed in the package systemd - 235-3ubuntu2

---
systemd (235-3ubuntu2) bionic; urgency=medium

  * systemd-fsckd: Fix ADT tests to work on s390x too.

systemd (235-3ubuntu1) bionic; urgency=medium

  * Merge 235-3 from debian:
- Drop UBUNTU-CVE-2017-15908 included in Debian.

  * Remaining delta from Debian:
- ship dhclient enter hook for dhclient integration with resolved
- ship resolvconf integration via stub-resolv.conf
- ship s390x virtio interface names migration
- do not disable systemd-resolved upon libnss-resolve removal
- do not remote fs in containers, for non-degrated boot
- CVE-2017-15908 in resolved fix loop on packets with pseudo dns types
- Unlink invocation id key, upon chown failure in containers
- Change default to UseDomains by default
- Do not treat failure to set Nice= setting as error in containers
- Add a condition to systemd-journald-audit.socet to not start in
  containers (fails)
- Build without any built-in/fallback DNS server setting
- Enable resolved by default
- Update autopkgtests for reliability/raciness, and testing for typical
  defaults
- Always upgrade udev, when running adt tests
- Skip test-execute on armhf
- Cherry-pick a few testsuite fixes

  * UBUNTU Do not use nested kvm during ADT tests.

systemd (235-3) unstable; urgency=medium

  [ Michael Biebl ]
  * Switch from XC-Package-Type to Package-Type. As of dpkg-dev 1.15.7
Package-Type is recognized as an official field name.
  * Install modprobe configuration file to /lib/modprobe.d.
Otherwise it is not read by kmod. (Closes: #879191)

  [ Felipe Sateler ]
  * Backport upstream (partial) fix for combined DynamicUser= + User=
UID was not allowed to be different to GID, which is normally the case in
debian, due to the group users being allocated the GID 100 without an
equivalent UID 100 being allocated.
  * Backport upstream patches to fully make DynamicUser=yes + static,
pre-existing User= work.

  [ Martin Pitt ]
  * Add missing python3-minimal dependency to systemd-tests
  * Drop long-obsolete systemd-bus-proxy system user
systemd-bus-proxy hasn't been shipped since before stretch and never
created any files. Thus clean up the obsolete system user on upgrades.
(Closes: #878182)
  * Drop static systemd-journal-gateway system user
systemd-journal-gatewayd.service now uses DynamicUser=, so we don't need
to create this statically any more. Don't remove the user on upgrades
though, as there is likely still be a running process. (Closes: #878183)
  * Use DynamicUser= for systemd-journal-upload.service.
  * Add Recommends: libnss-systemd to systemd-sysv.
This is useful to actually be able to resolve dynamically created system
users with DynamicUser=true. This concept is going to be used much more
in future versions and (hopefully) third-party .services, so pulling it
into the default installation seems prudent now.
  * resolved: Fix loop on packets with pseudo dns types.
(CVE-2017-15908, Closes: #880026, LP: #1725351)
  * bpf-firewall: Properly handle kernels without BPF cgroup but with TRIE maps.
Fixes "Detaching egress BPF: Invalid argument" log spam. (Closes: #878965)
  * Fix MemoryDenyWriteExecution= bypass with pkey_mprotect() (LP: #1725348)

 -- Dimitri John Ledkov   Tue, 21 Nov 2017 16:41:15
+

** Changed in: systemd (Ubuntu Bionic)
   Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-15908

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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  Fix Released

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725348/+subscriptions

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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-21 Thread Dimitri John Ledkov 
** Changed in: systemd (Ubuntu Bionic)
   Status: New => Fix Committed

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  Fix Committed

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-14 Thread Martin Pitt 
Patches backported into Debian packaging git:
https://anonscm.debian.org/cgit/pkg-
systemd/systemd.git/commit/?id=9bba5469f2b95ea9

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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  New
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  New

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-13 Thread zbyszek 
Upstream commits:

https://github.com/systemd/systemd/commit/b835eeb4ec1dd122b6feff2b70881265c529fcdd
https://github.com/systemd/systemd/commit/91691f1d3e3c66122fd0fc564ea3f20f566c2698
https://github.com/systemd/systemd/commit/213f2883c006d785e033597d2f46a110d85eb54b

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  New
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  New

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-13 Thread Ubuntu Foundations Team Bug Bot 
The attachment "0001-shared-seccomp-disallow-pkey_mprotect-the-same-as-
mp.patch" seems to be a patch.  If it isn't, please remove the "patch"
flag from the attachment, remove the "patch" tag, and if you are a
member of the ~ubuntu-reviewers, unsubscribe the team.

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

** Tags added: patch

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Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  New
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  New

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-13 Thread Dimitri John Ledkov 
** Also affects: systemd (Ubuntu Bionic)
   Importance: Undecided
   Status: New

** Also affects: systemd (Ubuntu Zesty)
   Importance: Undecided
   Status: New

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

** Also affects: systemd (Ubuntu Artful)
   Importance: Undecided
   Status: New

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  New
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  New

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1725348] Re: Systemd - Bypassing MemoryDenyWriteExecution policy

2017-11-13 Thread Marc Deslauriers 
** Information type changed from Private Security to Public Security

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https://bugs.launchpad.net/bugs/1725348

Title:
  Systemd - Bypassing MemoryDenyWriteExecution policy

Status in systemd package in Ubuntu:
  New
Status in systemd source package in Xenial:
  New
Status in systemd source package in Zesty:
  New
Status in systemd source package in Artful:
  New
Status in systemd source package in Bionic:
  New

Bug description:
  Hello,

  We would like to report to you a vulnerability about systemd which
  allows to bypass the MemoryDenyWriteExecution policy on Linux 4.9+.

  The vulnerability is described in the attached PDF file.

  
  Sincerely, 
  Thomas IMBERT

To manage notifications about this bug go to:
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