CVE-2021-38496

high

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.

References

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

Details

Source: MITRE

Published: 2021-11-03

Updated: 2022-03-17

Type: CWE-416

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 8.8

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

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH