CVE-2022-26387
HIGHFirefox < 98 and Firefox ESR < 91.7 - Time-of-check Time-of-use Race Condition in Add-on Installation
Title source: llmDescription
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.
References (4)
Core 4
Core References
Exploit, Issue Tracking, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1752979
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-10/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-11/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-12/
Scores
CVSS v3
7.5
EPSS
0.0011
EPSS Percentile
29.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-367
Status
published
Products (3)
mozilla/firefox
< 98.0
mozilla/firefox_esr
< 91.7
mozilla/thunderbird
< 91.7
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026