Bug 492782 – <net-irc/quassel-0.9.2 : manipulated clients can access backlog of all users on a shared core (CVE-2013-6404)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2013-11-28 11:15:33 UTC]

From ${URL} :

Affected versions: all versions prior to 0.9.2 (released 2013-11-26)

Description:

A Quassel core (server daemon) supports being used by multiple users, who all 
have independent settings, backlog and so on. The backlog is stored in a 
database shared by all users on a Quassel core, tagged with a user ID. 
However, some SQL queries didn't check for the correct user ID being provided.

This has the undesired effect that the Quassel core can be tricked into 
providing the backlog for an IRC channel or query that does not belong to the 
user session requesting it. Doing this requires a manipulated client sending 
appropriately crafted requests to the core. This client also needs to be 
properly authenticated, i.e. to have supplied valid user credentials for one 
of the users on the core.

Credit for finding this issue goes to Andrew Hampe.

Fix [1] has been released in 0.9.2 [2].

This patch can be cleanly applied to any version starting from 0.6.0, and 
easily backported to even older versions by adapting the schema version 
number.

Thanks,
~ Manuel Nickschas (Sput)

[1] <https://github.com/quassel/quassel/commit/a1a24da>
[2] <http://quassel-irc.org/pub/quassel-0.9.2.tar.bz2>


@maintainer(s): since the fixed package is already in the tree, please let us know if it is ready for the stabilization or not.

[Comment 1 GLSAMaker/CVETool Bot 2013-12-12 17:16:00 UTC]

CVE-2013-6404 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-6404):
  Quassel core (server daemon) in Quassel IRC before 0.9.2 does not properly
  verify the user ID when accessing user backlogs, which allows remote
  authenticated users to read other users' backlogs via the bufferid in (1)
  16/select_buffer_by_id.sql, (2) 16/select_buffer_by_id.sql, and (3)
  16/select_buffer_by_id.sql in core/SQL/PostgreSQL/.

[Comment 2 Sergey Popov (RETIRED) 2013-12-17 07:24:34 UTC]

Arches, please test and mark stable =net-irc/quassel-0.9.2

Target keywords: amd64 ppc x86

[Comment 3 Agostino Sarubbo 2013-12-21 10:32:47 UTC]

ppc stable

[Comment 4 Johannes Huber (RETIRED) 2013-12-22 16:48:19 UTC]

x86 stable

[Comment 5 Pacho Ramos 2013-12-22 18:12:39 UTC]

amd64 stable

[Comment 6 Mikle Kolyada (RETIRED) 2013-12-22 18:42:49 UTC]

@maintainer(s), please cleanup.

@security, please vote.

[Comment 7 Chris Reffett (RETIRED) 2013-12-22 18:55:21 UTC]

GLSA vote: no.

[Comment 8 Sergey Popov (RETIRED) 2013-12-23 12:38:29 UTC]

+  23 Dec 2013; Sergey Popov <[e-mail]> -quassel-0.9.1.ebuild:
+  Security cleanup, bug #492782

Thanks, folks

GLSA vote: no

Closing as noglsa