Description
The NS_SecurityCompareURIs function in netwerk/base/public/nsNetUtil.h in Mozilla Firefox before 3.5.16 and 3.6.x before 3.6.13, and SeaMonkey before 2.0.11, does not properly handle (1) about:neterror and (2) about:certerror pages, which allows remote attackers to spoof the location bar via a crafted web 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 6 | firefox | 3.6.13-2.el6_0 | RHSA-2010:0966 |
| RHEL 6 | xulrunner +1 | 1.9.2.13-3.el6_0 | RHSA-2010:0966 |
| RHEL 5 | firefox | 3.6.13-2.el5 | RHSA-2010:0966 |
| RHEL 5 | xulrunner +1 | 1.9.2.13-3.el5 | RHSA-2010:0966 |
| RHEL 4 | firefox | 3.6.13-3.el4 | RHSA-2010:0966 |
Advisories 1
- RHSA-2010:0966 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- SUSE-SA:2011:003 vendor-advisory
- FEDORA-2010-18775 vendor-advisory
- MDVSA-2010:251 vendor-advisory
- http://support.avaya.com/css/P8/documents/100124650
- RHSA-2010:0966 vendor-advisory
- USN-1019-1 vendor-advisory
- 42818 third-party-advisory
- 1024850 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=602780
- oval:org.mitre.oval:def:12512 vdb-entry signature
- FEDORA-2010-18920 vendor-advisory
- ADV-2011-0030 vdb-entry
- http://www.mozilla.org/security/announce/2010/mfsa2010-83.html
- FEDORA-2010-18890 vendor-advisory
- 42716 third-party-advisory
- FEDORA-2010-18773 vendor-advisory