USN-889-1: gzip vulnerabilities

20 January 2010

gzip vulnerabilities

Releases

Packages

  • gzip -

Details

It was discovered that gzip incorrectly handled certain malformed
compressed files. If a user or automated system were tricked into opening a
specially crafted gzip file, an attacker could cause gzip to crash or
possibly execute arbitrary code with the privileges of the user invoking
the program. (CVE-2009-2624)

Aki Helin discovered that gzip incorrectly handled certain malformed
files compressed with the Lempel–Ziv–Welch (LZW) algorithm. If a user or
automated system were tricked into opening a specially crafted gzip file,
an attacker could cause gzip to crash or possibly execute arbitrary code
with the privileges of the user invoking the program. (CVE-2010-0001)

Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

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