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CVE-2022-26387

Date: December 22, 2022

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.

Severity Score

Related Resources (10)

https://www.mozilla.org/security/advisories/mfsa2022-10/
https://bugzilla.mozilla.org/show_bug.cgi?id=1752979
https://security-tracker.debian.org/tracker/CVE-2022-26387
https://security.alpinelinux.org/vuln/CVE-2022-26387
https://nvd.nist.gov/vuln/detail/CVE-2022-26387
https://access.redhat.com/security/cve/CVE-2022-26387
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-26387
https://www.mozilla.org/security/advisories/mfsa2022-12/
https://www.mozilla.org/security/advisories/mfsa2022-11/
https://www.mend.io/vulnerability-database/CVE-2022-26387

Severity Score

Weakness Type (CWE)

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

CWE-367

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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