Articles / Debian: New chbg packages f…

Debian: New chbg packages fix arbitrary code execution

Danny Lungstrom discoverd a vulnerability in chbg, a tool to change background pictures. A maliciously crafted configuration/scenario file could overflow a buffer and lead to the execution of arbitrary code on the victim's machine. Fixed packages are available from security.debian.org.
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Debian Security Advisory DSA 644-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
January 18th, 2005                      http://www.debian.org/security/faq
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Package        : chbg
Vulnerability  : buffer overflow
Problem-Type   : local
Debian-specific: no
CVE ID         : CAN-2004-1264
Debian Bug     : 285904

Danny Lungstrom discoverd a vulnerability in chbg, a tool to change
background pictures.  A maliciously crafted configuration/scenario
file could overflow a buffer and lead to the execution of arbitrary
code on the victim's machine.

For the stable distribution (woody) this problem has been fixed in
version 1.5-1woody1.

For the unstable distribution (sid) this problem has been fixed in
version 1.5-4.

We recommend that you upgrade your chbg 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 3.0 alias woody
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1.dsc
      Size/MD5 checksum:      600 3cb28b61fb97dca63f09a486dae5612f
    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1.diff.gz
      Size/MD5 checksum:     3612 08098cf0fec406380e968186766de027
    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5.orig.tar.gz
      Size/MD5 checksum:   322878 4a158c94c25b359c86da1de9ef3e986b

  Alpha architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_alpha.deb
      Size/MD5 checksum:   294456 afd6ce377d43c0df909d955e04c328cd

  ARM architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_arm.deb
      Size/MD5 checksum:   247338 878c528ab81decd999503ad47557fc4a

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_i386.deb
      Size/MD5 checksum:   244862 d3a09b86dfc44164c541cda2eb66ce66

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_ia64.deb
      Size/MD5 checksum:   345228 e4b9ae6b9da9c34d5a930727bdfc1a44

  HP Precision architecture:

    Cannot be updated due to compiler error.

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_m68k.deb
      Size/MD5 checksum:   222916 7dce4c0b3ae27f624ee472bd153d5c66

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_mips.deb
      Size/MD5 checksum:   249054 66402b53b158bfa0b2144b6b97b1d794

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_mipsel.deb
      Size/MD5 checksum:   247536 769f5074ad1f4b148191d0e196d01778

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_powerpc.deb
      Size/MD5 checksum:   271272 f6b03b2a05de42ee203d7d9cbfe7c468

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_s390.deb
      Size/MD5 checksum:   239098 f20c7b0e36ecfc4540d3673f4ec477dd

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/c/chbg/chbg_1.5-1woody1_sparc.deb
      Size/MD5 checksum:   263302 28df5318e314bbaf79493b485aa6cffa


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

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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@lists.debian.org
Package info: `apt-cache show ' and http://packages.debian.org/

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