Description
Firefox before 1.0.1 and Mozilla before 1.7.6 allows remote attackers to spoof the SSL "secure site" lock icon via (1) a web site that does not finish loading, which shows the lock of the previous site, (2) a non-HTTP server that uses SSL, which causes the lock to be displayed when the SSL handshake is completed, or (3) a URL that generates an HTTP 204 error, which updates the icon and location information but does not change the display of the original site.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | firefox | 1.0.1-1.4.3 | RHSA-2005:176 |
Advisories 1
- RHSA-2005:176 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- 12659 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=258048
- http://www.mozilla.org/security/announce/mfsa2005-14.html
- oval:org.mitre.oval:def:100044 vdb-entry signature
- https://bugzilla.mozilla.org/show_bug.cgi?id=268483
- https://bugzilla.mozilla.org/show_bug.cgi?id=277564
- RHSA-2005:176 vendor-advisory
- oval:org.mitre.oval:def:9533 vdb-entry signature
- RHSA-2005:384 vendor-advisory
- GLSA-200503-30 vendor-advisory
- GLSA-200503-10 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=276720