CVE-2013-6673

Name: CVE-2013-6673
Creator: NVD / NIST
Published: 2013-12-11T15:55:13.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 2.89%

Last modified Jun 17, 2026

CVE-2013-6673 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 do not recognize a user's removal of trust from an EV X.509 certificate, which makes it easier for man-in-the-middle attackers to spoof SSL servers in opportunistic circumstances via a valid certificate that is unacceptable to the user.. EPSS estimates a 2.89% chance of exploitation in the next 30 days.

Description

Mozilla Firefox before 26.0, Firefox ESR 24.x before 24.2, Thunderbird before 24.2, and SeaMonkey before 2.23 do not recognize a user's removal of trust from an EV X.509 certificate, which makes it easier for man-in-the-middle attackers to spoof SSL servers in opportunistic circumstances via a valid certificate that is unacceptable to the user.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

2.89%

85.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-310

Affected Software

Vendor	Product	Versions	Update
Fedoraproject	Fedora	18	—
Fedoraproject	Fedora	19	—
Fedoraproject	Fedora	20	—
Mozilla	Firefox	< 26.0	—
Mozilla	Firefox	>= 24.0, < 24.2	—
Mozilla	Seamonkey	< 2.23	—
Mozilla	Thunderbird	< 24.2	—
Suse	Suse Linux Enterprise Software Development Kit	11.0	Sp3
Opensuse	Opensuse	12.2	—
Opensuse	Opensuse	12.3	—
Opensuse	Opensuse	13.1	—
Suse	Linux Enterprise Desktop	11	Sp3
Suse	Linux Enterprise Server	11	Sp3
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	12.10	—
Canonical	Ubuntu Linux	13.04	—
Canonical	Ubuntu Linux	13.10	—

References

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123437.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124108.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124257.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/125470.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-12/msg00010.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00085.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00086.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00087.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00119.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00120.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00121.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00002.htmlMailing List, Third Party Advisory
http://www.mozilla.org/security/announce/2013/mfsa2013-113.htmlVendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
http://www.securityfocus.com/bid/64213Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1029470Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1029476Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2052-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2053-1Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=917380Exploit, Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/201504-01Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123437.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124108.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124257.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/125470.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2013-12/msg00010.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00085.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00086.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00087.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00119.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00120.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-12/msg00121.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00002.htmlMailing List, Third Party Advisory
http://www.mozilla.org/security/announce/2013/mfsa2013-113.htmlVendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
http://www.securityfocus.com/bid/64213Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1029470Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1029476Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2052-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2053-1Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=917380Exploit, Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/201504-01Third Party Advisory

Timeline

Published: Dec 11, 2013
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-6673?

How severe is CVE-2013-6673?

CVE-2013-6673 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 2.89% probability of exploitation in the next 30 days.

How do I fix CVE-2013-6673?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-6673?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST