Mozilla Firefox and Thunderbird Use-After-Free Vulnerability in the JavaScript: GC Component

A use-after-free vulnerability has been identified in the JavaScript garbage collection component of Mozilla Firefox and Thunderbird. This issue affects Firefox versions prior to 148, Firefox ESR versions prior to 115.33 and 140.8, as well as Thunderbird versions prior to 148 and 140.8. The vulnerability arises from improper memory management, which can lead to memory corruption. Such corruption may potentially be exploited to execute arbitrary code.

Impact

Exploitation of this vulnerability can lead to memory corruption, with evidence suggesting that it could be leveraged to execute arbitrary code.

Remediation

Users can upgrade to Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, or Thunderbird ESR 140.8 to address this vulnerability.