Description
Mozilla Firefox before 3.0.19 and 3.5.x before 3.5.8, and SeaMonkey before 2.0.3, when the XMLHttpRequestSpy module in the Firebug add-on is used, does not properly handle interaction between the XMLHttpRequestSpy object and chrome privileged objects, which allows remote attackers to execute arbitrary JavaScript via a crafted HTTP response.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | xulrunner | 1.9.0.19-1 | DSA-2027-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | firefox | 3.0.19-1.el5_5 | RHSA-2010:0332 |
| RHEL 5 | xulrunner +2 | 1.9.0.19-1.el5_5 | RHSA-2010:0332 |
| RHEL 4 | firefox | 3.0.19-1.el4 | RHSA-2010:0332 |
Advisories 2
- RHSA-2010:0332 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2027-1 xulrunner - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- SUSE-SA:2011:003 vendor-advisory
- MDVSA-2010:251 vendor-advisory
- http://support.avaya.com/css/P8/documents/100124650
- firefox-firebug-code-execution(57394) vdb-entry
- 39397 third-party-advisory
- 39308 third-party-advisory
- 42818 third-party-advisory
- oval:org.mitre.oval:def:6971 vdb-entry signature
- ADV-2010-0781 vdb-entry
- USN-921-1 vendor-advisory
- 39124 vdb-entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=504021
- SUSE-SR:2010:013 vendor-advisory
- ADV-2010-0764 vdb-entry
- ADV-2011-0030 vdb-entry
- MDVSA-2010:070 vendor-advisory
- oval:org.mitre.oval:def:9446 vdb-entry signature
- http://www.mozilla.org/security/announce/2010/mfsa2010-21.html
- 39243 third-party-advisory
- ADV-2010-0748 vdb-entry
- ADV-2010-0849 vdb-entry
- 1023783 vdb-entry
- DSA-2027 vendor-advisory
- 3924 third-party-advisory
- RHSA-2010:0332 vendor-advisory