Debian Linux Security Advisory 2699-1 - Multiple security issues have been found in Iceweasel, Debian's version of the Mozilla Firefox web browser. These issues include multiple memory safety errors, missing input sanitizing vulnerabilities, use-after-free vulnerabilities, buffer overflows and other programming errors which may lead to the execution of arbitrary code, privilege escalation, information leaks or cross site scripting.
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Ubuntu Security Notice 1748-1 - Bobby Holley discovered vulnerabilities in Chrome Object Wrappers (COW) and System Only Wrappers (SOW). If a user were tricked into opening a specially crafted page and had scripting enabled, a remote attacker could exploit this to bypass security protections to obtain sensitive information or potentially execute code with the privileges of the user invoking Thunderbird. Frederik Braun discovered that Thunderbird made the location of the active browser profile available to JavaScript workers. Scripting for Thunderbird is disabled by default in Ubuntu. Various other issues were also addressed.
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Ubuntu Security Notice 1729-1 - Olli Pettay, Christoph Diehl, Gary Kwong, Jesse Ruderman, Andrew McCreight, Joe Drew, Wayne Mery, Alon Zakai, Christian Holler, Gary Kwong, Luke Wagner, Terrence Cole, Timothy Nikkel, Bill McCloskey, and Nicolas Pierron discovered multiple memory safety issues affecting Firefox. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit these to cause a denial of service via application crash. Atte Kettunen discovered that Firefox could perform an out-of-bounds read while rendering GIF format images. An attacker could exploit this to crash Firefox. Various other issues were also addressed.
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Red Hat Security Advisory 2013-0272-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. Several flaws were found in the processing of malformed content. Malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. It was found that, after canceling a proxy server's authentication prompt, the address bar continued to show the requested site's address. An attacker could use this flaw to conduct phishing attacks by tricking a user into believing they are viewing trusted content.
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Red Hat Security Advisory 2013-0271-01 - 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. It was found that, after canceling a proxy server's authentication prompt, the address bar continued to show the requested site's address. An attacker could use this flaw to conduct phishing attacks by tricking a user into believing they are viewing a trusted site.
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