Debian: 'at' Local privilege escalation
Posted by LinuxSecurity.com Team   
Debian zen-parse found a bug in the current implementation of at which leadsinto a heap corruption vulnerability which in turn could potentiallylead into an exploit of the daemon user.

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Debian Security Advisory DSA 102-1                     security@debian.org 
http://www.debian.org/security/                             Martin Schulze
January 16th, 2002
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Package        : at
Vulnerability  : daemon exploit
Problem-Type   : local
Debian-specific: no

zen-parse found a bug in the current implementation of at which leads
into a heap corruption vulnerability which in turn could potentially
lead into an exploit of the daemon user.

We recommend that you upgrade your at packages.

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 2.2 alias potato
------------------------------------

  Source archives:

     http://security.debian.org/dists/stable/updates/main/source/at_3.1.8-10.1.dsc
      MD5 checksum: 5050a81922314ee1a01582e62ffdb00f
     http://security.debian.org/dists/stable/updates/main/source/at_3.1.8-10.1.diff.gz
      MD5 checksum: 9fec73d790aa854411bf02ae49888224
     http://security.debian.org/dists/stable/updates/main/source/at_3.1.8.orig.tar.gz
      MD5 checksum: 1e83522666118b3eab4cb8e345e6da5a

  Alpha architecture:

     http://security.debian.org/dists/stable/updates/main/binary-alpha/at_3.1.8-10.1_alpha.deb
      MD5 checksum: 9520a63861b8264d6811996b9b2f878d

  ARM architecture:

     http://security.debian.org/dists/stable/updates/main/binary-arm/at_3.1.8-10.1_arm.deb
      MD5 checksum: a9b005d56ca131cceb6625ccb1d03ee5

  Intel ia32 architecture:

     http://security.debian.org/dists/stable/updates/main/binary-i386/at_3.1.8-10.1_i386.deb
      MD5 checksum: 8af8ea462718b6bee748b2a809834d2e

  Motorola 680x0 architecture:

     http://security.debian.org/dists/stable/updates/main/binary-m68k/at_3.1.8-10.1_m68k.deb
      MD5 checksum: b836db6d112d9c29f0f8c12b13511f3e

  PowerPC architecture:

     
http://security.debian.org/dists/stable/updates/main/binary-powerpc/at_3.1.8-10.1_powerpc.deb
      MD5 checksum: 21a24bfe018ee300ecb30a6d851f201b

  Sun Sparc architecture:

     http://security.debian.org/dists/stable/updates/main/binary-sparc/at_3.1.8-10.1_sparc.deb
      MD5 checksum: 032d0e4f32b903e26ddb0939499841c6


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

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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/