USN-690-3: Firefox vulnerabilities

18 December 2008

Firefox vulnerabilities

Releases

Packages

Details

Several flaws were discovered in the browser engine. These problems could allow
an attacker to crash the browser and possibly execute arbitrary code with user
privileges. (CVE-2008-5500)

Boris Zbarsky discovered that the same-origin check in Firefox could be
bypassed by utilizing XBL-bindings. An attacker could exploit this to read data
from other domains. (CVE-2008-5503)

Marius Schilder discovered that Firefox did not properly handle redirects to
an outside domain when an XMLHttpRequest was made to a same-origin resource.
It's possible that sensitive information could be revealed in the
XMLHttpRequest response. (CVE-2008-5506)

Chris Evans discovered that Firefox did not properly protect a user's data when
accessing a same-domain Javascript URL that is redirected to an unparsable
Javascript off-site resource. If a user were tricked into opening a malicious
website, an attacker may be able to steal a limited amount of private data.
(CVE-2008-5507)

Several flaws were discovered in the Javascript engine. If a user were tricked
into opening a malicious website, an attacker could exploit this to execute
arbitrary Javascript code within the context of another website or with chrome
privileges. (CVE-2008-5511, CVE-2008-5512)

Update instructions

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

Ubuntu 6.06

After a standard system upgrade you need to restart Firefox to effect the
necessary changes.

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