Gentoo Linux Security Advisory 201512-10 - Multiple vulnerabilities have been found in Mozilla Firefox and Thunderbird, the worst of which may allow user-assisted execution of arbitrary code. Versions less than 38.5.0 are affected.
8b345c71a57deda9f0a8d7eb50719b94a327aadac84155e9eb75aa9517d6449eRed Hat Security Advisory 2015-1455-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. It was found that Thunderbird skipped key-pinning checks when handling an error that could be overridden by the user. This flaw allowed a user to override a pinned certificate, which is an action the user should not be able to perform.
cdddfc23ea54e06009b5918e85bbccd60b6f828effef66b7d5a516c6047e2b18Ubuntu Security Notice 2656-2 - USN-2656-1 fixed vulnerabilities in Firefox for Ubuntu 14.04 LTS and later releases. This update provides the corresponding update for Ubuntu 12.04 LTS. Karthikeyan Bhargavan discovered that NSS incorrectly handled state transitions for the TLS state machine. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to skip the ServerKeyExchange message and remove the forward-secrecy property. Looben Yan discovered 2 use-after-free issues when using XMLHttpRequest in some circumstances. If a user were tricked in to opening a specially crafted website, 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 Firefox. Various other issues were also addressed.
328cec1a37ec3067650890b309d1dd0a9ac8e5ee91e22185327112346ae999c2Ubuntu Security Notice 2656-1 - Karthikeyan Bhargavan discovered that NSS incorrectly handled state transitions for the TLS state machine. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to skip the ServerKeyExchange message and remove the forward-secrecy property. Looben Yan discovered 2 use-after-free issues when using XMLHttpRequest in some circumstances. If a user were tricked in to opening a specially crafted website, 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 Firefox. Various other issues were also addressed.
8b8e1309051b659a9010aa4da8be7f871c23e5dcdb455674eaf7979c0a9f13b8Red Hat Security Advisory 2015-1207-01 - 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.
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