Description
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0.10, Thunderbird before 16.0.2, Thunderbird ESR 10.x before 10.0.10, and SeaMonkey before 2.13.2 does not properly determine the calling document and principal in its return value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, and makes it easier for remote attackers to execute arbitrary JavaScript code by leveraging certain add-on behavior.
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 | 10.0.10-1.el6_3 | RHSA-2012:1413, RHSA-2012:1407 |
| RHEL 5 | firefox +3 | 10.0.10-1.el5_8 | RHSA-2012:1413, RHSA-2012:1407 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 10.0.10-1.el5_8 | RHSA-2012:1413 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
Advisories 4
- RHSA-2012:1413 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1407 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 51144 third-party-advisory
- SUSE-SU-2012:1426 vendor-advisory
- 51123 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=793121
- 51121 third-party-advisory
- 51147 third-party-advisory
- USN-1620-1 vendor-advisory
- RHSA-2012:1407 vendor-advisory
- 51127 third-party-advisory
- 56302 vdb-entry
- 55318 third-party-advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-90.html
- oval:org.mitre.oval:def:16856 vdb-entry signature
- USN-1620-2 vendor-advisory
- openSUSE-SU-2012:1412 vendor-advisory
- 51165 third-party-advisory
- RHSA-2012:1413 vendor-advisory
- 51146 third-party-advisory