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)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.029 (86.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
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
Weakness classification (CWE)
References
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking)
- www.ubuntu.com/usn/USN-2702-3 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/announce/2015/mfsa2015-91.html (Vendor Advisory)
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (Third Party Advisory)
- www.securitytracker.com/id/1033247 (vdb-entry)
- www.ubuntu.com/usn/USN-2702-2 (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-2702-1 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201605-06 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html (vendor-advisory, Third Party Advisory)