CVE-2022-26387

State: Published
Severity: 7.5 High
Published: Dec 22, 2022
Updated: Apr 15, 2025
Reserved: Mar 3, 2022

Description

When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

Affected Products

Product	Versions
FirefoxMozilla	before 98Affected
Firefox ESRMozilla	before 91.7Affected
ThunderbirdMozilla	before 91.7Affected

References

https://www.mozilla.org/security/advisories/mfsa2022-12/
https://www.mozilla.org/security/advisories/mfsa2022-10/
https://www.mozilla.org/security/advisories/mfsa2022-11/
https://bugzilla.mozilla.org/show_bug.cgi?id=1752979

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