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USN-535-1: Firefox vulnerabilities

22 October 2007

Firefox vulnerabilities

Releases

Packages

Details

Various flaws were discovered in the layout and JavaScript engines.
By tricking a user into opening a malicious web page, an attacker could
execute arbitrary code with the user's privileges. (CVE-2007-5336,
CVE-2007-5339, CVE-2007-5340)

Michal Zalewski discovered that the onUnload event handlers were
incorrectly able to access information outside the old page content.
A malicious web site could exploit this to modify the contents, or steal
confidential data (such as passwords), of the next loaded web page.
(CVE-2007-1095)

Stefano Di Paola discovered that Firefox did not correctly request
Digest Authentications. A malicious web site could exploit this to
inject arbitrary HTTP headers or perform session splitting attacks
against proxies. (CVE-2007-2292)

Flaws were discovered in the file upload form control. By tricking
a user into opening a malicious web page, an attacker could force
arbitrary files from the user's computer to be uploaded without their
consent. (CVE-2006-2894, CVE-2007-3511)

Eli Friedman discovered that XUL could be used to hide a window's
titlebar. A malicious web site could exploit this to enhance their
attempts at creating phishing web sites. (CVE-2007-5334)

Georgi Guninski discovered that Firefox would allow file-system based
web pages to access additional files. By tricking a user into opening
a malicious web page from a gnome-vfs location, an attacker could steal
arbitrary files from the user's computer. (CVE-2007-5337)

It was discovered that the XPCNativeWrappers were not safe in
certain situations. By tricking a user into opening a malicious
web page, an attacker could run arbitrary JavaScript with the user's
privileges. (CVE-2007-5338)

Update instructions

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

Ubuntu 7.10
Ubuntu 7.04
Ubuntu 6.10
Ubuntu 6.06

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

Related notices

  • USN-536-1: mozilla-thunderbird, thunderbird