Bug 29010 - Protocol handling issues in X Window System client libraries
Summary: Protocol handling issues in X Window System client libraries
Status: CLOSED FIXED
Alias: None
Product: Sisyphus
Classification: Development
Component: altlinux-release (show other bugs)
Version: unstable
Hardware: all Linux
: P3 blocker
Assignee: Nobody's working on this, feel free to take it
QA Contact: qa-sisyphus
URL: http://www.x.org/wiki/Development/Sec...
Keywords: security
Depends on:
Blocks: 27685
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Reported: 2013-05-24 13:41 MSK by Dmitry V. Levin
Modified: 2013-07-16 19:04 MSK (History)
4 users (show)

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Description Dmitry V. Levin 2013-05-24 13:41:18 MSK
From http://www.x.org/wiki/Development/Security/Advisory-2013-05-23:

Ilja van Sprundel, a security researcher with IOActive, has discovered
a large number of issues in the way various X client libraries handle
the responses they receive from servers, and has worked with X.Org's
security team to analyze, confirm, and fix these issues.

Most of these issues stem from the client libraries trusting the server
to send correct protocol data, and not verifying that the values will
not overflow or cause other damage.   Most of the time X clients & servers
are run by the same user, with the server more privileged from the clients,
so this is not a problem, but there are scenarios in which a privileged
client can be connected to an unprivileged server, for instance, connecting
a setuid X client (such as a screen lock program) to a virtual X server
(such as Xvfb or Xephyr) which the user has modified to return invalid
data, potentially allowing the user to escalate their privileges.

Fixes are available in git commits listed on
http://www.x.org/wiki/Development/Security/Advisory-2013-05-23

Fixes will also be included in these module releases from X.Org:
     libX11 1.5.99.902 (1.6 RC2)
     libXcursor 1.1.14
     libXext 1.3.2
     libXfixes 5.0.1
     libXi 1.7.2
     libXinerama 1.1.3
     libXp 1.0.2      
     libXrandr 1.4.1
     libXrender 0.9.8
     libXRes 1.0.7
     libXv 1.0.8
     libXvMC 1.0.8
     libXxf86dga 1.1.4
     libXxf86vm 1.1.3
     libdmx 1.1.3
     libxcb 1.9.1
     libFS 1.0.5                                                         
     libXt 1.1.4
or releases to be determined from our sister projects:
     xf86-video-openchrome    OpenChrome project - http://www.openchrome.org/
     Mesa                     Mesa3D project - http://www.mesa3d.org/
Comment 1 AEN 2013-06-02 00:39:40 MSK
Необновленные пакеты на 02.06.13:
libXext
libXi
libXp
libXrandr
libXrender
libXv
libXvMC
libxcb
libFS
openchrome
Comment 2 AEN 2013-06-05 06:02:38 MSK
Необновленные пакеты на 05.06.13:
libXi
libXp
libXrender
libXvMC
libxcb
libFS
openchrome
Comment 3 AEN 2013-07-16 17:09:37 MSK
Спасибо!
Comment 4 Andrey Cherepanov 2013-07-16 19:04:04 MSK
Скопировано в p7. Бага закрыта.