CVE-2021-38500 Information

Description

Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 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://bugzilla.mozilla.org/buglist.cgi?bug_id=1725854%2C1728321 https://www.mozilla.org/security/advisories/mfsa2021-46/ 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