[USN-794-1] Perl vulnerability

Ubuntu Security Notice USN-794-1 July 02, 2009
libcompress-raw-zlib-perl, perl vulnerability
CVE-2009-1391

A security issue affects the following Ubuntu releases:

• Ubuntu 8.04 LTS
• Ubuntu 8.10
• Ubuntu 9.04

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 8.04 LTS

• libcompress-raw-zlib-perl 2.008-1ubuntu0.1

Ubuntu 8.10

• libcompress-raw-zlib-perl 2.011-2ubuntu0.1
• perl 5.10.0-11.1ubuntu2.3

Ubuntu 9.04

• libcompress-raw-zlib-perl 2.015-1ubuntu0.1
• perl 5.10.0-19ubuntu1.1

In general, a standard system upgrade is sufficient to effect the
necessary changes.

Details follow:

It was discovered that the Compress::Raw::Zlib Perl module incorrectly
handled certain zlib compressed streams. If a user or automated system were
tricked into processing a specially crafted compressed stream or file, a
remote attacker could crash the application, leading to a denial of
service.