XSS in Mozilla Firefox
CVE-2016-5262
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 process JavaScript event-handler attributes of a MARQUEE element within a sandboxed IFRAME element that lacks the sandbox="allow-scripts" attribute value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.015 (70.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Mozilla Firefox — versions 45.1.0, 45.1.1, 45.2.0
- Oracle Linux — versions 5.0, 6, 7
- N/a — versions n/a
Weakness classification (CWE)
References
- security@mozilla.org (vendor-advisory, x_refsource_DEBIAN)
- security@mozilla.org (vdb-entry, x_refsource_SECTRACK)
- security@mozilla.org (x_refsource_CONFIRM, Third Party Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory)
- security@mozilla.org (vdb-entry, x_refsource_BID)
- security@mozilla.org (x_refsource_REDHAT, vendor-advisory)
- security@mozilla.org (vendor-advisory, x_refsource_GENTOO)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
- security@mozilla.org (vendor-advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2016-5262?
- CVE-2016-5262 is a medium-severity vulnerability in Mozilla Firefox, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-08-05.
- How severe is CVE-2016-5262?
- Medium severity. CVSS v3 base score is 6.1 out of 10.