Several remote vulnerabilities have been discovered in the Iceweasel web browser, an unbranded version of the Firefox browser. The Common Vulnerabilities and Exposures project identifies the following problems:
Peter Brodersen and Alexander Klink discovered that the autoselection of SSL client certificates could lead to users being tracked, resulting in a loss of privacy.
moz_bug_r_a4 discovered that insecure handling of event handlers could lead to cross-site scripting.
Boris Zbarsky, Johnny Stenback and moz_bug_r_a4 discovered that incorrect principal handling could lead to cross-site scripting and the execution of arbitrary code.
Tom Ferris, Seth Spitzer, Martin Wargers, John Daggett and Mats Palmgren discovered crashes in the layout engine, which might allow the execution of arbitrary code.
Gregory Fleischer discovered that HTTP Referrer headers were handled incorrectly in combination with URLs containing Basic Authentication credentials with empty usernames, resulting in potential Cross-Site Request Forgery attacks.
Gregory Fleischer discovered that web content fetched through the jar: protocol can use Java to connect to arbitrary ports. This is only an issue in combination with the non-free Java plugin.
Chris Thomas discovered that background tabs could generate XUL popups overlaying the current tab, resulting in potential spoofing attacks.
The Mozilla products from the old stable distribution (sarge) are no longer supported.
For the stable distribution (etch), these problems have been fixed in version 188.8.131.52-0etch1.
We recommend that you upgrade your iceweasel packages.