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USN-745-1: Firefox and Xulrunner vulnerabilities

28 March 2009

Firefox and Xulrunner vulnerabilities

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Releases

Packages

Details

It was discovered that Firefox did not properly perform XUL garbage
collection. If a user were tricked into viewing a malicious website, a
remote attacker could cause a denial of service or execute arbitrary code
with the privileges of the user invoking the program. This issue only
affected Ubuntu 8.04 LTS and 8.10. (CVE-2009-1044)

A flaw was discovered in the way Firefox performed XSLT transformations.
If a user were tricked into opening a crafted XSL stylesheet, an attacker
could cause a denial of service or execute arbitrary code with the
privileges of the user invoking the program. (CVE-2009-1169)

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 8.10
Ubuntu 8.04
Ubuntu 7.10
Ubuntu 6.06

After a standard system upgrade you need to restart Firefox and any
applications that use xulrunner, such as Epiphany, to effect the necessary
changes.