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                                    CERT-Renater

                         Note d'Information No. 2006/VULN192
_____________________________________________________________________

DATE                      : 24/04/2006

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running gdm.

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- --------------------------------------------------------------------------
Debian Security Advisory DSA 1040-1                    security at debian.org
http://www.debian.org/security/                             Martin Schulze
April 24th, 2006                        http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : gdm
Vulnerability  : programming error
Problem type   : local
Debian-specific: no
CVE ID         : CVE-2006-1057
BugTraq ID     : 17635

A vulnerability has been identified in gdm, a display manager for X,
that could allow a local attacker to gain elevated privileges by
exploiting a race condition in the handling of the .ICEauthority file.

The old stable distribution (woody) is not affected by this problem.

For the stable distribution (sarge) this problem has been fixed in
version 2.6.0.8-1sarge2.

For the unstable distribution (sid) this problem will be fixed in
version 2.14.1-1.

We recommend that you upgrade your gdm package.


Upgrade Instructions
- --------------------

wget url
         will fetch the file for you
dpkg -i file.deb
         will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
         will update the internal database
apt-get upgrade
         will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.1 alias sarge
- --------------------------------

   Source archives:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2.dsc
       Size/MD5 checksum:      732 5e615263c621f3166eab26233249934b
     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2.diff.gz
       Size/MD5 checksum:   258548 323d831f75f4a784b754ee4d6902120f
     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8.orig.tar.gz
       Size/MD5 checksum:  5619049 1417d176925a4a24c465c043df7b6a39

   Alpha architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_alpha.deb
       Size/MD5 checksum:  3243636 3641c4ee397d6f70fa15b439da1ca29d

   AMD64 architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_amd64.deb
       Size/MD5 checksum:  3178276 03057b54637e652dd37f98bf94e3b575

   ARM architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_arm.deb
       Size/MD5 checksum:  3124804 beb9189cf49420259a51210c1864cc08

   Intel IA-32 architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_i386.deb
       Size/MD5 checksum:  3144008 36c7dfed8ab7ece8d5b75fa720c6120d

   Intel IA-64 architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_ia64.deb
       Size/MD5 checksum:  3328900 c6b11ef8670cb3f63d946e0779d65c3f

   HP Precision architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_hppa.deb
       Size/MD5 checksum:  3185510 486b1377061ad3655a34d17abc9ece23

   Motorola 680x0 architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_m68k.deb
       Size/MD5 checksum:  3115464 a002336849c45be8d7a70630a9dbe714

   Big endian MIPS architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_mips.deb
       Size/MD5 checksum:  3155474 dea4b0e6dbb2b1a4ac0b5a90e9a93035

   Little endian MIPS architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_mipsel.deb
       Size/MD5 checksum:  3147934 19dc1118fec157e9ae4f7e40418a7cbb

   PowerPC architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_powerpc.deb
       Size/MD5 checksum:  3172026 611508441a9bcd7df2bb3ac486a20da4

   IBM S/390 architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_s390.deb
       Size/MD5 checksum:  3185506 f03786d134fda10cfb7ce9c6b4e13044

   Sun Sparc architecture:

     http://security.debian.org/pool/updates/main/g/gdm/gdm_2.6.0.8-1sarge2_sparc.deb
       Size/MD5 checksum:  3137658 ea03ac108174033db47559465da66184


   These files will probably be moved into the stable distribution on
   its next update.

- ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce at lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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