Ubuntu Security Notice 5972-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. Lukas Bernhard discovered that Thunderbird did not properly manage memory when invalidating JIT code while following an iterator. An attacker could potentially exploits this issue to cause a denial of service.
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