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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.025 (84.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
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
- bugzilla.mozilla.org/show_bug.cgi (Vendor Advisory, Permissions Required, Issue Tracking)
- security.gentoo.org/glsa/201810-01 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2018-15/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2018-16/ (Vendor Advisory)
- www.securitytracker.com/id/1041193 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3705-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/104561 (VDB Entry, Third Party Advisory, vdb-entry)
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.