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Fencer Intel
medium 4.0

CVE-2012-1964 json

The certificate-warning functionality in browser/components/certerror/content/aboutCertError.xhtml in Mozilla Firefox 4.x through 12.0, Fir…

published 2012-07-18 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1973

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

The certificate-warning functionality in browser/components/certerror/content/aboutCertError.xhtml in Mozilla Firefox 4.x through 12.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 12.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.10 does not properly handle attempted clickjacking of the about:certerror page, which allows man-in-the-middle attackers to trick users into adding an unintended exception via an IFRAME element.

Patch / fix

  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 10.0.6-1.el5_8
  • thunderbird RHEL 6 10.0.6-1.el6_3
  • firefox RHEL 5 10.0.6-1.el5_8
  • firefox RHEL 6 10.0.6-1.el6_3
  • xulrunner RHEL 5 10.0.6-2.el5_8
  • xulrunner RHEL 6 10.0.6-1.el6_3

red hat advisories RHSA-2012:1089RHSA-2012:1088

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-1964 updated cvss 4.3

Mozilla: Clickjacking of certificate warning page (MFSA 2012-54)

  • Red Hat Enterprise Linux (v. 5 server) firefox 10.0.6-1.el5_8, xulrunner 10.0.6-2.el5_8 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 10.0.6-1.el5_8, xulrunner 10.0.6-2.el5_8, thunderbird 10.0.6-1.el5_8 Red Hat Enterprise Linux Desktop (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3, thunderbird 10.0.6-1.el6_3 Red Hat Enterprise Linux Desktop Optional (v. 6) xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux Server (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3
    +4 more products
    Red Hat Enterprise Linux Server Optional (v. 6) xulrunner 10.0.6-1.el6_3, thunderbird 10.0.6-1.el6_3 Red Hat Enterprise Linux Workstation (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3, thunderbird 10.0.6-1.el6_3 Red Hat Enterprise Linux Workstation Optional (v. 6) xulrunner 10.0.6-1.el6_3 Red Hat RHEL Desktop Workstation (v. 5 client) xulrunner 10.0.6-2.el5_8
    fixed: vendor fix RHSA-2012:1088
  • Red Hat RHEL Optional Productivity Applications (v. 5 server) thunderbird 10.0.6-1.el5_8
    fixed: vendor fix RHSA-2012:1089

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:N/AC:H/Au:N/C:P/I:P/A:N

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.