Description
Integer underflow in Mozilla Firefox 3.6.x before 3.6.23 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via JavaScript code containing a large RegExp expression.
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 6.0 | iceape | 2.0.11-8 | DSA-2312-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze5 | DSA-2317-1 |
| Debian 6.0 | iceweasel | 3.5.16-10 | DSA-2313-1 |
| Debian 5.0 | xulrunner | 1.9.0.19-14 | DSA-2313-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.23-2.el6_1 | RHSA-2011:1341 |
| RHEL 6 | thunderbird | 3.1.15-1.el6_1 | RHSA-2011:1342 |
| RHEL 6 | xulrunner +1 | 1.9.2.23-1.el6_1.1 | RHSA-2011:1341 |
| RHEL 5 | firefox | 3.6.23-2.el5_7 | RHSA-2011:1341 |
| RHEL 5 | thunderbird | 2.0.0.24-26.el5_7 | RHSA-2011:1343 |
| RHEL 5 | xulrunner +1 | 1.9.2.23-1.el5_7 | RHSA-2011:1341 |
| RHEL 4 | firefox | 3.6.23-1.el4 | RHSA-2011:1341 |
| RHEL 4 | seamonkey +5 | 1.0.9-76.el4 | RHSA-2011:1344 |
| RHEL 4 | thunderbird | 1.5.0.12-44.el4 | RHSA-2011:1343 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 2.0.0.24-26.el5_7 | RHSA-2011:1343 |
Advisories 7
- RHSA-2011:1343 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1344 Red Hat Security Advisory: seamonkey security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1342 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1341 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2317-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2313-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2312-1 iceape - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- MDVSA-2011:139 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=684815
- http://www.mozilla.org/security/announce/2011/mfsa2011-37.html
- DSA-2312 vendor-advisory
- RHSA-2011:1341 vendor-advisory
- oval:org.mitre.oval:def:14012 vdb-entry signature
- MDVSA-2011:141 vendor-advisory
- SUSE-SU-2011:1256 vendor-advisory
- DSA-2317 vendor-advisory
- MDVSA-2011:140 vendor-advisory
- DSA-2313 vendor-advisory