Your message dated Mon, 18 Feb 2013 07:46:36 +0100
with message-id <[email protected]>
and subject line Re: Bug#700163: pu: package openssh/1:5.5p1-6+squeeze3
has caused the Debian Bug report #700167,
regarding unblock openssh/1:6.0p1-4
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)
--
700167: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=700167
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: release.debian.org
Severity: normal
User: [email protected]
Usertags: pu
I'd like to upload to stable to fix #700102. (Actually I've already
uploaded this because I forgot I was supposed to ask first - whoops - so
it's in a queue somewhere already.) This is a DoS fix, but since a
member of the security team (CCed) reported it and requested an upload
to stable, I assume they don't think it's worth issuing a DSA.
Here's the diff.
diff -Nru openssh-5.5p1/debian/changelog openssh-5.5p1/debian/changelog
--- openssh-5.5p1/debian/changelog 2012-02-20 15:18:05.000000000 +0000
+++ openssh-5.5p1/debian/changelog 2013-02-08 21:39:18.000000000 +0000
@@ -1,3 +1,10 @@
+openssh (1:5.5p1-6+squeeze3) stable; urgency=low
+
+ * CVE-2010-5107: Improve DoS resistance by changing default of MaxStartups
+ to 10:30:100 (closes: #700102).
+
+ -- Colin Watson <[email protected]> Fri, 08 Feb 2013 21:39:15 +0000
+
openssh (1:5.5p1-6+squeeze2) stable; urgency=high
* CVE-2012-0814: Don't send the actual forced command in a debug message,
diff -Nru openssh-5.5p1/debian/patches/max-startups-default.patch
openssh-5.5p1/debian/patches/max-startups-default.patch
--- openssh-5.5p1/debian/patches/max-startups-default.patch 1970-01-01
01:00:00.000000000 +0100
+++ openssh-5.5p1/debian/patches/max-startups-default.patch 2013-02-08
21:36:08.000000000 +0000
@@ -0,0 +1,57 @@
+Description: Change default of MaxStartups to 10:30:100
+ This causes sshd to start doing random early drop at 10 connections up to
+ 100 connections. This will make it harder to DoS as CPUs have come a long
+ way since the original value was set back in 2000.
+Author: Darren Tucker
+Origin:
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/servconf.c?r1=1.234#rev1.234
+Origin:
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshd_config.5?r1=1.156#rev1.156
+Origin:
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshd_config?r1=1.89#rev1.89
+Bug-Debian: http://bugs.debian.org/700102
+Forwarded: not-needed
+Last-Update: 2013-02-08
+
+Index: b/servconf.c
+===================================================================
+--- a/servconf.c
++++ b/servconf.c
+@@ -249,11 +249,11 @@
+ if (options->gateway_ports == -1)
+ options->gateway_ports = 0;
+ if (options->max_startups == -1)
+- options->max_startups = 10;
++ options->max_startups = 100;
+ if (options->max_startups_rate == -1)
+- options->max_startups_rate = 100; /* 100% */
++ options->max_startups_rate = 30; /* 30% */
+ if (options->max_startups_begin == -1)
+- options->max_startups_begin = options->max_startups;
++ options->max_startups_begin = 10;
+ if (options->max_authtries == -1)
+ options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
+ if (options->max_sessions == -1)
+Index: b/sshd_config
+===================================================================
+--- a/sshd_config
++++ b/sshd_config
+@@ -102,7 +102,7 @@
+ #ClientAliveCountMax 3
+ #UseDNS yes
+ #PidFile /var/run/sshd.pid
+-#MaxStartups 10
++#MaxStartups 10:30:100
+ #PermitTunnel no
+ #ChrootDirectory none
+
+Index: b/sshd_config.5
+===================================================================
+--- a/sshd_config.5
++++ b/sshd_config.5
+@@ -672,7 +672,7 @@
+ Additional connections will be dropped until authentication succeeds or the
+ .Cm LoginGraceTime
+ expires for a connection.
+-The default is 10.
++The default is 10:30:100.
+ .Pp
+ Alternatively, random early drop can be enabled by specifying
+ the three colon separated values
diff -Nru openssh-5.5p1/debian/patches/series
openssh-5.5p1/debian/patches/series
--- openssh-5.5p1/debian/patches/series 2012-02-20 02:22:06.000000000 +0000
+++ openssh-5.5p1/debian/patches/series 2013-02-08 21:36:03.000000000 +0000
@@ -29,6 +29,7 @@
# Security fixes
forced-command-debug-security.patch
+max-startups-default.patch
# Versioning
package-versioning.patch
Thanks,
--
Colin Watson [[email protected]]
--- End Message ---
--- Begin Message ---
On 2013-02-09 12:28, Colin Watson wrote:
> Package: release.debian.org
> Severity: normal
> User: [email protected]
> Usertags: pu
>
> I'd like to upload to stable to fix #700102. (Actually I've already
> uploaded this because I forgot I was supposed to ask first - whoops - so
> it's in a queue somewhere already.) This is a DoS fix, but since a
> member of the security team (CCed) reported it and requested an upload
> to stable, I assume they don't think it's worth issuing a DSA.
>
> Here's the diff.
>
> [...]
Unblocked openssh/1:6.0p1-4 for Wheezy, thanks.
~Niels
--- End Message ---
