USN-745-1: Firefox and Xulrunner vulnerabilities

28 March 2009

Firefox and Xulrunner vulnerabilities

Releases

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)

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.