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.(CVE-2023-6857, CVE-2023-6858, CVE-2023-6859, CVE-2023-6861, CVE-2023-6862, CVE-2023-6863, CVE-2023-6864) 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. (CVE-2023-50762) Marcus Brinkmann discovered that Thunderbird did not properly compare the signature creation date with the message date and time when using digitally signed S/MIME email message. An attacker could potentially exploit this issue to spoof date and time of an email message. (CVE-2023-50761) DoHyun Lee discovered that Thunderbird 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. (CVE-2023-6856) Andrew Osmond discovered that Thunderbird did not properly validate the textures produced by remote decoders. An attacker could potentially exploit this issue to escape the sandbox. (CVE-2023-6860)
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