VulnerabilityModified
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-*…
MEDIUM 6.4EPSS 3.09%
Does this matter?
Lower severity and a low EPSS score (3.09%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 2.0
- 6.4 MEDIUMAV:N/AC:L/Au:N/C:P/I:P/A:N
- EPSS
- 3.09% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-254
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
- http://rhn.redhat.com/errata/RHSA-2015-1834.html
- http://rhn.redhat.com/errata/RHSA-2015-1852.html
- http://www.debian.org/security/2015/dsa-3365
- http://www.mozilla.org/security/announce/2015/mfsa2015-111.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/76816
- http://www.securitytracker.com/id/1033640
- http://www.ubuntu.com/usn/USN-2743-1
- http://www.ubuntu.com/usn/USN-2743-2
- http://www.ubuntu.com/usn/USN-2743-3
- http://www.ubuntu.com/usn/USN-2743-4
- http://www.ubuntu.com/usn/USN-2754-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1200856
- https://bugzilla.mozilla.org/show_bug.cgi?id=1200869
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
- http://rhn.redhat.com/errata/RHSA-2015-1834.html
- http://rhn.redhat.com/errata/RHSA-2015-1852.html
- http://www.debian.org/security/2015/dsa-3365
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.