-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 _______________________________________________________________________ Mandriva Linux Security Advisory MDVSA-2010:070-1 http://www.mandriva.com/security/ _______________________________________________________________________ Package : firefox Date : April 20, 2010 Affected: 2009.0 _______________________________________________________________________ Problem Description: Security issues were identified and fixed in firefox: Security researcher regenrecht reported (via TippingPoint's Zero Day Initiative) a potential reuse of a deleted image frame in Firefox 3.6's handling of multipart/x-mixed-replace images. Although no exploit was shown, re-use of freed memory has led to exploitable vulnerabilities in the past (CVE-2010-0164). Mozilla developers identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these crashes showed evidence of memory corruption under certain circumstances and we presume that with enough effort at least some of these could be exploited to run arbitrary code (CVE-2010-0165, CVE-2010-0167). Mozilla developer Josh Soref of Nokia reported that documents failed to call certain security checks when attempting to preload images. Although the image content is not available to the page, it is possible to specify protocols that are normally not allowed in a web page such as file:. This includes internal schemes implemented by add-ons that might perform privileged actions resulting in something like a Cross-Site Request Forgery (CSRF) attack against the add-on. Potential severity would depend on the add-ons installed (CVE-2010-0168). Mozilla developer Blake Kaplan reported that the window.location object was made a normal overridable JavaScript object in the Firefox 3.6 browser engine (Gecko 1.9.2) because new mechanisms were developed to enforce the same-origin policy between windows and frames. This object is unfortunately also used by some plugins to determine the page origin used for access restrictions. A malicious page could override this object to fool a plugin into granting access to data on another site or the local file system. The behavior of older Firefox versions has been restored (CVE-2010-0170). Mozilla developer Justin Dolske reported that the new asynchronous Authorization Prompt (HTTP username and password) was not always attached to the correct window. Although we have not demonstrated this, it may be possible for a malicious page to convince a user to open a new tab or popup to a trusted service and then have the HTTP authorization prompt from the malicious page appear to be the login prompt for the trusted page. This potential attack is greatly mitigated by the fact that very few web sites use HTTP authorization, preferring instead to use web forms and cookies (CVE-2010-0172). Unspecified vulnerability in Mozilla Firefox 3.5.x through 3.5.8 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly have unknown other impact via vectors that might involve compressed data, a different vulnerability than CVE-2010-1028 (CVE-2010-1122). Mozilla developers identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these crashes showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code (CVE-2010-0173, CVE-2010-0174) Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a select event handler for XUL tree items could be called after the tree item was deleted. This results in the execution of previously freed memory which an attacker could use to crash a victim's browser and run arbitrary code on the victim's computer (CVE-2010-0175). Security researcher regenrecht reported via TippingPoint's Zero Day Initiative an error in the way . In certain cases, the number of references to an