XSS in Mozilla Firefox
CVE-2015-4490
The nsCSPHostSrc::permits function in dom/security/nsCSPUtils.cpp in Mozilla Firefox before 40.0 does not implement the Content Security Policy Level 2 exceptions for the blob, data, and filesystem URL schemes during wildcard source-expression matching, which might make it easier for remote attackers to conduct cross-site scripting (XSS) attacks by leveraging unexpected policy-enforcement behavior.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.029 (85.7th percentile) — read the EPSS interpretation.
Affected products
- Mozilla Firefox
- Oracle Solaris — versions 11.3
- Canonical Ubuntu_linux — versions 12.04, 14.04, 15.04
- Opensuse — versions 13.1, 13.2
- N/a — versions n/a
Weakness classification (CWE)
References
- security@mozilla.org (x_refsource_CONFIRM, Issue Tracking)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- security@mozilla.org (x_refsource_CONFIRM, Vendor Advisory)
- security@mozilla.org (x_refsource_CONFIRM, Third Party Advisory)
- security@mozilla.org (vdb-entry, x_refsource_SECTRACK)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@mozilla.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@mozilla.org (vendor-advisory, x_refsource_GENTOO)
- security@mozilla.org (vendor-advisory, Third Party Advisory, x_refsource_SUSE)