Vulnerability in Mozilla Firefox
CVE-2016-2817
The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs.update API calls, which allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted extension that accesses a (1) javascript: or (2) data: URL.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (68.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html (vendor-advisory)
- www.securitytracker.com/id/1035692 (vdb-entry)
- lists.opensuse.org/opensuse-updates/2016-05/msg00038.html (vendor-advisory)
- www.ubuntu.com/usn/USN-2936-2 (vendor-advisory)
- security.gentoo.org/glsa/201701-15 (vendor-advisory)
- www.ubuntu.com/usn/USN-2936-1 (vendor-advisory)
- bugzilla.mozilla.org/show_bug.cgi
- www.ubuntu.com/usn/USN-2936-3 (vendor-advisory)
- www.mozilla.org/security/announce/2016/mfsa2016-46.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-2817?
- CVE-2016-2817 is a medium-severity vulnerability in Mozilla Firefox, classified under CWE-264. CVSS score: 5.4/10. Published 2016-04-30.
- How severe is CVE-2016-2817?
- Medium severity. CVSS v3 base score is 5.4 out of 10.