CVE-2021-43543 Information

Description

Documents loaded with the CSP sandbox directive could have escaped the sandbox’s script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0 Firefox ESR < 91.4.0 and Firefox < 95.

CVSS Vector

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

Reference

https://www.mozilla.org/security/advisories/mfsa2021-52/ https://bugzilla.mozilla.org/show_bug.cgi?id=1738418 https://www.mozilla.org/security/advisories/mfsa2021-54/ https://www.mozilla.org/security/advisories/mfsa2021-53/ https://www.debian.org/security/2021/dsa-5026 https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html https://www.debian.org/security/2022/dsa-5034 https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://security.gentoo.org/glsa/202202-03

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1