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.
EPSS: 0.013 (66.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Mozilla Firefox
- N/a — versions n/a
Weakness classification (CWE)
References
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (vdb-entry, x_refsource_SECTRACK)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory)
- security@mozilla.org (vendor-advisory, x_refsource_GENTOO)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory)
- security@mozilla.org (x_refsource_CONFIRM)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory)
- security@mozilla.org (x_refsource_CONFIRM, 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.