CVE Vulnerability

CVE-2021-43538

By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

4.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.mozilla.org/security/advisories/mfsa2021-52/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-54/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-53/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1739091 Issue Tracking Permissions Required
https://www.debian.org/security/2021/dsa-5026 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html Mailing List Third Party Advisory
https://www.debian.org/security/2022/dsa-5034 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202202-03 Third Party Advisory
https://security.gentoo.org/glsa/202208-14 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Information

Published : 2021-12-08 10:15

Updated : 2022-12-09 03:55

NVD link : CVE-2021-43538

Mitre link : CVE-2021-43538

Products Affected
No products.
CWE
CWE-362