CVE-2015-4490

MEDIUM

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.

References

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html

http://www.mozilla.org/security/announce/2015/mfsa2015-91.html

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

http://www.securitytracker.com/id/1033247

http://www.ubuntu.com/usn/USN-2702-1

http://www.ubuntu.com/usn/USN-2702-2

http://www.ubuntu.com/usn/USN-2702-3

https://bugzilla.mozilla.org/show_bug.cgi?id=1086999

https://security.gentoo.org/glsa/201605-06

Details

Source: MITRE

Published: 2015-08-16

Updated: 2018-10-30

Type: CWE-79

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM