USN-745-1: Firefox and Xulrunner vulnerabilities

Releases

• Ubuntu 8.10
• Ubuntu 8.04
• Ubuntu 7.10
• Ubuntu 6.06

Packages

• firefox -
• firefox-3.0 -
• xulrunner-1.9 -

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

• firefox-3.0 - 3.0.8+nobinonly-0ubuntu0.8.10.2
• abrowser - 3.0.8+nobinonly-0ubuntu0.8.10.2
• xulrunner-1.9 - 1.9.0.8+nobinonly-0ubuntu0.8.10.1

Ubuntu 8.04

• firefox-3.0 - 3.0.8+nobinonly-0ubuntu0.8.04.2
• xulrunner-1.9 - 1.9.0.8+nobinonly-0ubuntu0.8.04.1

Ubuntu 7.10

• firefox - 2.0.0.21~tb.21.308+nobinonly-0ubuntu0.7.10.1

Ubuntu 6.06

• firefox - 1.5.dfsg+1.5.0.15~prepatch080614l-0ubuntu1

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

References

• CVE-2009-1044
• CVE-2009-1169