CVE-2021-43534

high

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

References

https://www.mozilla.org/security/advisories/mfsa2021-50/

https://www.mozilla.org/security/advisories/mfsa2021-49/

https://www.mozilla.org/security/advisories/mfsa2021-48/

https://www.debian.org/security/2022/dsa-5034

https://www.debian.org/security/2021/dsa-5026

https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html

https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html

Details

Source: Mitre, NVD

Published: 2021-12-08

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High