Ubuntu Security Notice 2754-1 - Andrew Osmond, Olli Pettay, Andrew Sutherland, Christian Holler, David Major, Andrew McCreight, and Cameron McCormack discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Khalil Zhani discovered a buffer overflow when parsing VP9 content in some circumstances. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Various other issues were also addressed.
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Red Hat Security Advisory 2015-1834-02 - Mozilla Firefox is an open source web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox. Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. Two information leak flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to disclose sensitive information or, in certain cases, crash.
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Debian Linux Security Advisory 3365-1 - Multiple security issues have been found in Iceweasel, Debian's version integer overflows, buffer overflows, use-after-frees and other implementation errors may lead to the execution of arbitrary code, information disclosure or denial of service.
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