CVE-2021-38496 Information

Description

During operations on MessageTasks a task may have been removed while it was still scheduled resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15 Thunderbird < 91.2 Firefox ESR < 91.2 Firefox ESR < 78.15 and Firefox < 93.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://www.mozilla.org/security/advisories/mfsa2021-43/ https://www.mozilla.org/security/advisories/mfsa2021-45/ https://www.mozilla.org/security/advisories/mfsa2021-44/ https://www.mozilla.org/security/advisories/mfsa2021-47/ https://www.mozilla.org/security/advisories/mfsa2021-46/ https://bugzilla.mozilla.org/show_bug.cgi?id=1725335 https://www.debian.org/security/2022/dsa-5034 https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8