Auth bypass in Mozilla Firefox
CVE-2018-12369
WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.
Vulnerability class: Broken Access Control
EPSS: 0.025 (83.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Canonical Ubuntu_linux — versions 14.04, 16.04, 17.10
Weakness classification (CWE)
References
- security@mozilla.org (Vendor Advisory, Permissions Required, x_refsource_CONFIRM, Issue Tracking)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@mozilla.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2018-12369?
- CVE-2018-12369 is a critical-severity vulnerability in Mozilla Firefox, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2018-10-18.
- How severe is CVE-2018-12369?
- Critical severity. CVSS v3 base score is 9.8 out of 10.