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ESB-2005.0605 -- Debian Security Advisory DSA 772-1 -- New apt-cacher package fixes arbitrary command execution

Date: 03 August 2005

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Click here for PGP verifiable version
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===========================================================================
             AUSCERT External Security Bulletin Redistribution

            ESB-2005.0605 -- Debian Security Advisory DSA 772-1
         New apt-cacher package fixes arbitrary command execution
                               3 August 2005

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           apt-cacher
Publisher:         Debian
Operating System:  Debian GNU/Linux 3.1
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated
CVE Names:         CAN-2005-1854

Original Bulletin: http://www.debian.org/security/2005/dsa-772

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- - --------------------------------------------------------------------------
Debian Security Advisory DSA 772-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
August 3rd, 2005                        http://www.debian.org/security/faq
- - --------------------------------------------------------------------------

Package        : apt-cacher
Vulnerability  : missing input sanitising
Problem-Type   : remote
Debian-specific: yes
CVE ID         : CAN-2005-1854

Eduard Bloch discovered a bug in apt-cacher, a caching system for
Debian package and source files, that could allow remote attackers to
execute arbitrary commands on the caching host as user www-data.

The old stable distribution (woody) does not contain this package.

For the stable distribution (sarge) this problem has been fixed in
version 0.9.4sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 0.9.10.

We recommend that you upgrade your apt-cacher 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/a/apt-cacher/apt-cacher_0.9.4sarge1.dsc
      Size/MD5 checksum:      609 36c17e1638ff520f7abdff90748286b6
    http://security.debian.org/pool/updates/main/a/apt-cacher/apt-cacher_0.9.4sarge1.tar.gz
      Size/MD5 checksum:    50441 cc318d7cf0ced3f497db7b64a80e9544

  Architecture independent components:

    http://security.debian.org/pool/updates/main/a/apt-cacher/apt-cacher_0.9.4sarge1_all.deb
      Size/MD5 checksum:    39092 33c67a2990c5e9c8c52bd20b8ce72816


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

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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
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which may arise from following or acting on information or advice contained in
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NOTE: This is only the original release of the security bulletin.  It may
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        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

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