Debian Security Advisory

DSA-102-2 at -- daemon exploit

Date Reported:
16 Jan 2002
Affected Packages:
at
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2002-0004.
More information:

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.

Unfortunately, the bugfix from DSA 102-1 wasn't propagated properly due to a packaging bug. While the file parsetime.y was fixed, and yy.tab.c should be generated from it, yy.tab.c from the original source was still used. This has been fixed in DSA-102-2.

Fixed in:

Debian GNU/Linux 2.2 (potato)

Source:
http://security.debian.org/dists/stable/updates/main/source/at_3.1.8-10.2.dsc
http://security.debian.org/dists/stable/updates/main/source/at_3.1.8-10.2.diff.gz
http://security.debian.org/dists/stable/updates/main/source/at_3.1.8.orig.tar.gz
Alpha:
http://security.debian.org/dists/stable/updates/main/binary-alpha/at_3.1.8-10.2_alpha.deb
ARM:
http://security.debian.org/dists/stable/updates/main/binary-arm/at_3.1.8-10.2_arm.deb
Intel ia32:
http://security.debian.org/dists/stable/updates/main/binary-i386/at_3.1.8-10.2_i386.deb
Motorola 680x0:
http://security.debian.org/dists/stable/updates/main/binary-m68k/at_3.1.8-10.2_m68k.deb
PowerPC:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/at_3.1.8-10.2_powerpc.deb
Sun Sparc:
http://security.debian.org/dists/stable/updates/main/binary-sparc/at_3.1.8-10.2_sparc.deb

MD5 checksums of the listed files are available in the original advisory.