Ubuntu Security Notice 1251-1 - It was discovered that CVE-2011-3004, which addressed possible privilege escalation in addons, also affected Firefox 3.6. An attacker could potentially exploit Firefox when an add-on was installed that used loadSubscript in vulnerable ways. Yosuke Hasegawa discovered that the Mozilla browser engine mishandled invalid sequences in the Shift-JIS encoding. A malicious website could possibly use this flaw this to steal data or inject malicious scripts into web content. Various other issues were also addressed.
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