CVE Vulnerabilities

CVE-2022-22753

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

Published: Dec 22, 2022 | Modified: Dec 29, 2022
CVSS 3.x
7.1
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

A Time-of-Check Time-of-Use bug existed in the Maintenance (Updater) Service that could be abused to grant Users write access to an arbitrary directory. This could have been used to escalate to SYSTEM access.This bug only affects Firefox on Windows. Other operating systems are unaffected.. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Firefox Mozilla * 97.0 (excluding)
Firefox_esr Mozilla * 91.6 (excluding)
Thunderbird Mozilla * 91.6 (excluding)
Firefox Ubuntu trusty *
Firefox Ubuntu upstream *
Thunderbird Ubuntu trusty *
Thunderbird Ubuntu xenial *

Potential Mitigations

References