Mandriva Linux Security Advisory 2010-169 - dom/base/nsJSEnvironment.cpp in Mozilla Firefox 3.5.x before 3.5.11 and 3.6.x before 3.6.7, Thunderbird 3.0.x before 3.0.6 and 3.1.x before 3.1.1, and SeaMonkey before 2.0.6 does not properly suppress a script's URL in certain circumstances involving a redirect and an error message, which allows remote attackers to obtain sensitive information about script parameters via a crafted HTML document, related to the window.onerror handler. Mozilla Firefox permits cross-origin loading of CSS stylesheets even when the stylesheet download has an incorrect MIME type and the stylesheet document is malformed, which allows remote HTTP servers to obtain sensitive information via a crafted document. Various other Mozilla related vulnerabilities have been addressed.
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Debian Linux Security Advisory 2075-1 - Several remote vulnerabilities have been discovered in Xulrunner, a runtime environment for XUL applications.
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Ubuntu Security Notice 958-1 - Several flaws were discovered in the browser engine of Thunderbird. An integer overflow was discovered in how Thunderbird processed CSS values. An integer overflow was discovered in how Thunderbird interpreted the XUL element. Aki Helin discovered that libpng did not properly handle certain malformed PNG images. Yosuke Hasegawa discovered that the same-origin check in Thunderbird could be bypassed by utilizing the importScripts Web Worker method. Chris Evans discovered that Thunderbird did not properly process improper CSS selectors. Soroush Dalili discovered that Thunderbird did not properly handle script error output.
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Ubuntu Security Notice 957-1 - Several flaws were discovered in the browser engine of Firefox. If a user were tricked into viewing a malicious site, a remote attacker could use this to crash the browser or possibly run arbitrary code as the user invoking the program. Various integer overflows and other issues have also been addressed.
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