CVE-2012-3976

Name: CVE-2012-3976
Creator: NVD / NIST
Published: 2012-08-29T10:56:41.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.78%

Last modified Jun 16, 2026

CVE-2012-3976 is a vulnerability of currently unknown severity. Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, and SeaMonkey before 2.12 do not properly handle onLocationChange events during navigation between different https sites, which allows remote attackers to spoof the X.509 certificate information in the address bar via a crafted web page.. EPSS estimates a 1.78% chance of exploitation in the next 30 days.

Description

Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, and SeaMonkey before 2.12 do not properly handle onLocationChange events during navigation between different https sites, which allows remote attackers to spoof the X.509 certificate information in the address bar via a crafted web page.

Metrics

EPSS Probability

1.78%

75.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions	Update
Mozilla	Firefox	< 15.0	—
Mozilla	Firefox	>= 10.0, < 10.0.7	—
Mozilla	Seamonkey	< 2.12	—
Opensuse	Opensuse	12.2	—
Suse	Linux Enterprise Desktop	10	Sp4
Suse	Linux Enterprise Desktop	11	Sp2
Suse	Linux Enterprise Server	10	Sp4
Suse	Linux Enterprise Server	11	Sp2
Suse	Linux Enterprise Software Development Kit	11	Sp2
Redhat	Enterprise Linux Desktop	5.0	—
Redhat	Enterprise Linux Desktop	6.0	—
Redhat	Enterprise Linux Eus	6.3	—
Redhat	Enterprise Linux Server	5.0	—
Redhat	Enterprise Linux Server	6.0	—
Redhat	Enterprise Linux Server Eus	6.3	—
Redhat	Enterprise Linux Workstation	5.0	—
Redhat	Enterprise Linux Workstation	6.0	—
Canonical	Ubuntu Linux	10.04	—
Canonical	Ubuntu Linux	11.04	—
Canonical	Ubuntu Linux	11.10	—
Canonical	Ubuntu Linux	12.04	—

References

http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1210.htmlThird Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-69.htmlVendor Advisory
http://www.securityfocus.com/bid/55313Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1548-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1548-2Third Party Advisory
http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdfThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=768568Issue Tracking, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16060Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2012-1210.htmlThird Party Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-69.htmlVendor Advisory
http://www.securityfocus.com/bid/55313Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1548-1Third Party Advisory
http://www.ubuntu.com/usn/USN-1548-2Third Party Advisory
http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdfThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=768568Issue Tracking, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16060Third Party Advisory

Timeline

Published: Aug 29, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-3976?

How severe is CVE-2012-3976?

Severity scoring for CVE-2012-3976 is pending analysis. The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.

How do I fix CVE-2012-3976?

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-2012-3976?

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

Scan your code now

Source: NVD / NIST