USN-690-1: Firefox and xulrunner vulnerabilities

17 December 2008

firefox-3.0, xulrunner-1.9 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 8.10
  • Ubuntu 8.04 LTS

Software Description

  • firefox-3.0
  • xulrunner-1.9

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, CVE-2008-5501, CVE-2008-5502)

It was discovered that Firefox did not properly handle persistent cookie data. If a user were tricked into opening a malicious website, an attacker could write persistent data in the user’s browser and track the user across browsing sessions. (CVE-2008-5505)

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)

Chip Salzenberg, Justin Schuh, Tom Cross, and Peter William discovered Firefox did not properly parse URLs when processing certain control characters. (CVE-2008-5508)

Kojima Hajime discovered that Firefox did not properly handle an escaped null character. An attacker may be able to exploit this flaw to bypass script sanitization. (CVE-2008-5510)

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)

Flaws were discovered in the session-restore feature of Firefox. If a user were tricked into opening a malicious website, an attacker could exploit this to perform cross-site scripting attacks or execute arbitrary Javascript code with chrome privileges. (CVE-2008-5513)

Update instructions

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

Ubuntu 8.10
abrowser - 3.0.5+nobinonly-0ubuntu0.8.10.1
firefox-3.0 - 3.0.5+nobinonly-0ubuntu0.8.10.1
xulrunner-1.9 - 1.9.0.5+nobinonly-0ubuntu0.8.10.1
Ubuntu 8.04 LTS
firefox-3.0 - 3.0.5+nobinonly-0ubuntu0.8.04.1
xulrunner-1.9 - 1.9.0.5+nobinonly-0ubuntu0.8.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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