CVE-2021-43528

medium

Description

Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird < 91.4.0.

References

https://www.mozilla.org/security/advisories/mfsa2021-54/

https://bugzilla.mozilla.org/show_bug.cgi?id=1742579

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

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

Details

Source: MITRE

Published: 2021-12-08

Updated: 2022-03-17

Type: CWE-269

Risk Information

CVSS v2

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 6.5

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

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM