CVE-2021-29974

medium

Description

When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to override an error on a domain which had specified HTTP Strict Transport Security (which implies that the error should not be override-able.) This issue did not affect the network connections, and they were correctly upgraded to HTTPS automatically. This vulnerability affects Firefox < 90.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1704843

https://www.mozilla.org/security/advisories/mfsa2021-28/

https://security.gentoo.org/glsa/202202-03

Details

Source: MITRE

Published: 2021-08-05

Updated: 2022-03-16

Risk Information

CVSS v2

Base Score: 2.6

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

Impact Score: 2.9

Exploitability Score: 4.9

Severity: LOW

CVSS v3

Base Score: 4.3

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

Impact Score: 1.4

Exploitability Score: 2.8

Severity: MEDIUM