Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | <= 39.0.3 |
| Canonical | Ubuntu Linux | 12.04 |
| Opensuse | Opensuse | 13.1 |
| Oracle | Solaris | 11.3 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.htmlThird Party Advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-91.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
- http://www.securitytracker.com/id/1033247
- http://www.ubuntu.com/usn/USN-2702-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2702-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2702-3
- https://bugzilla.mozilla.org/show_bug.cgi?id=1086999Issue Tracking
- https://security.gentoo.org/glsa/201605-06
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.htmlThird Party Advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-91.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
- http://www.securitytracker.com/id/1033247
FAQ
What is CVE-2015-4490?
CVE-2015-4490 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 UR...
How severe is CVE-2015-4490?
CVE-2015-4490 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-4490?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Canonical Ubuntu Linux, Opensuse Opensuse, Oracle Solaris.