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USN-889-1: gzip vulnerabilities

20 January 2010

gzip vulnerabilities

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Releases

Packages

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

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.