Ubuntu Security Notice 1185-1 - Gary Kwong, Igor Bukanov, and Bob Clary discovered multiple memory vulnerabilities in the Gecko rendering engine. An attacker could use these to possibly execute arbitrary code with the privileges of the user invoking Thunderbird. It was discovered that a vulnerability in event management code could permit JavaScript to be run in the wrong context. This could potentially allow a malicious website to run code as another website or with escalated privileges in a chrome-privileged context. Various other issues were also addressed.
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