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medium4.3

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 excepti…

Impact

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.

Affected products

VendorProductAffected versions
MozillaFirefox
through 39.0.3
CanonicalUbuntu Linux
Versions 12.04, 14.04, 15.04
OpensuseOpensuse
Versions 13.1, 13.2
OracleSolaris
Version 11.3

Weakness classification

CWE-79

References