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CVE-2015-4490

Date: August 15, 2015

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.

Severity Score

Related Resources (13)

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
https://security.gentoo.org/glsa/201605-06
http://www.securitytracker.com/id/1033247
http://www.mozilla.org/security/announce/2015/mfsa2015-91.html
http://www.ubuntu.com/usn/USN-2702-3
https://bugzilla.mozilla.org/show_bug.cgi?id=1086999
http://www.ubuntu.com/usn/USN-2702-2
https://nvd.nist.gov/vuln/detail/CVE-2015-4490
https://people.canonical.com/~ubuntu-security/cve/CVE-2015-4490
http://www.ubuntu.com/usn/USN-2702-1
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
https://www.mend.io/vulnerability-database/CVE-2015-4490

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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