Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2015-4520

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.

Published

2015-09-24T04:59:19.253

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.4 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

4.9

Weaknesses

Type: Primary
CWE-254

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	38.0	Yes
Application	mozilla	firefox	38.0.1	Yes
Application	mozilla	firefox	38.0.5	Yes
Application	mozilla	firefox	38.1.0	Yes
Application	mozilla	firefox	38.1.1	Yes
Application	mozilla	firefox	38.2.0	Yes
Application	mozilla	firefox	38.2.1	Yes
Application	mozilla	firefox	≤ 40.0.3	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1834.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-1852.html ([email protected])
http://www.debian.org/security/2015/dsa-3365 ([email protected])
http://www.mozilla.org/security/announce/2015/mfsa2015-111.html Vendor Advisory ([email protected])
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html ([email protected])
http://www.securityfocus.com/bid/76816 ([email protected])
http://www.securitytracker.com/id/1033640 ([email protected])
http://www.ubuntu.com/usn/USN-2743-1 ([email protected])
http://www.ubuntu.com/usn/USN-2743-2 ([email protected])
http://www.ubuntu.com/usn/USN-2743-3 ([email protected])
http://www.ubuntu.com/usn/USN-2743-4 ([email protected])
http://www.ubuntu.com/usn/USN-2754-1 ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1200856 ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1200869 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1834.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-1852.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3365 (af854a3a-2127-422b-91ae-364da2661108)
http://www.mozilla.org/security/announce/2015/mfsa2015-111.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/76816 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1033640 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2743-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2743-2 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2743-3 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2743-4 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2754-1 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1200856 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1200869 (af854a3a-2127-422b-91ae-364da2661108)