USN-349-1: gzip vulnerabilities

Ubuntu Security Notice USN-349-1

19th September, 2006

gzip vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 6.06 LTS
  • Ubuntu 5.10
  • Ubuntu 5.04


Tavis Ormandy discovered that gzip did not sufficiently verify the
validity of gzip or compress archives while unpacking. By tricking an
user or automated system into unpacking a specially crafted compressed
file, this could be exploited to execute arbitrary code with the
user's privileges.

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 6.06 LTS:
gzip 1.3.5-12ubuntu0.1
Ubuntu 5.10:
gzip 1.3.5-11ubuntu2.1
Ubuntu 5.04:
gzip 1.3.5-9ubuntu3.5

To update your system, please follow these instructions:

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


CVE-2006-4334, CVE-2006-4335, CVE-2006-4336, CVE-2006-4337, CVE-2006-4338