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Mend.io Vulnerability Database

CVE-2015-4520

Date: September 23, 2015

Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 allow remote attackers to bypass CORS preflight protection mechanisms by leveraging (1) duplicate cache-key generation or (2) retrieval of a value from an incorrect HTTP Access-Control-* response header.

Severity Score

6.5

Related Resources (25)

Url: https://bugzilla.mozilla.org/show_bug.cgi?id=1200869

Url: https://access.redhat.com/security/cve/CVE-2015-4520

Url: http://www.securityfocus.com/bid/76816

Url: http://www.debian.org/security/2015/dsa-3365

Url: http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2015-4520

Url: https://bugzilla.mozilla.org/show_bug.cgi?id=1200856

Url: http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.html

Url: http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html

Url: http://www.ubuntu.com/usn/USN-2743-3

Url: http://www.ubuntu.com/usn/USN-2743-4

Url: http://www.mozilla.org/security/announce/2015/mfsa2015-111.html

Url: http://www.ubuntu.com/usn/USN-2743-1

Url: http://www.ubuntu.com/usn/USN-2754-1

Url: http://www.ubuntu.com/usn/USN-2743-2

Url: http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.html

Url: http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2015-4520

Url: http://www.securitytracker.com/id/1033640

Url: http://rhn.redhat.com/errata/RHSA-2015-1852.html

Url: http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html

Url: http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html

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

Url: http://rhn.redhat.com/errata/RHSA-2015-1834.html

Url: https://www.mend.io/vulnerability-database/CVE-2015-4520

Severity Score

6.5

Weakness Type (CWE)

Security Features

CWE-254

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	LOW
Integrity (I):	LOW
Availability (A):	NONE

CVSS v2

Base Score:	6.4
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	NONE
Additional information:

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CVE-2015-4520

Date: September 23, 2015

Severity Score

Related Resources (25)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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