Ubuntu Security Notice 6563-1 - 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. Marcus Brinkmann discovered that Thunderbird did not properly parse a PGP/MIME payload that contains digitally signed text. An attacker could potentially exploit this issue to spoof an email message.
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Ubuntu Security Notice 6562-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. DoHyun Lee discovered that Firefox did not properly manage memory when used on systems with the Mesa VM driver. An attacker could potentially exploit this issue to execute arbitrary code.
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Debian Linux Security Advisory 5582-1 - Multiple security issues were discovered in Thunderbird, which could result in denial of service, the execution of arbitrary code or spoofing of signed PGP/MIME and SMIME emails.
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Debian Linux Security Advisory 5581-1 - Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, sandbox escape or clickjacking.
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