Description
The SVGTextElement.getCharNumAtPosition function in Mozilla Firefox before 3.6.20, and 4.x through 5; Thunderbird 3.x before 3.1.12 and other versions before 6; SeaMonkey 2.x before 2.3; and possibly other products does not properly handle SVG text, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to a "dangling pointer."
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 | 2.0.11-7 | DSA-2295-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze4 | DSA-2297-1 |
| Debian 6.0 | iceweasel | 3.5.16-9 | DSA-2296-1 |
| Debian 5.0 | xulrunner | 1.9.0.19-13 | DSA-2296-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 3.6.20-2.el6_1 | RHSA-2011:1164 |
| RHEL 6 | thunderbird | 3.1.12-1.el6_1 | RHSA-2011:1166 |
| RHEL 6 | xulrunner +1 | 1.9.2.20-2.el6_1 | RHSA-2011:1164 |
| RHEL 5 | firefox | 3.6.20-2.el5 | RHSA-2011:1164 |
| RHEL 5 | xulrunner +1 | 1.9.2.20-2.el5 | RHSA-2011:1164 |
| RHEL 4 | firefox | 3.6.20-2.el4 | RHSA-2011:1164 |
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 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Advisories 8
- RHSA-2011:1166 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:1164 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2297-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2295-1 iceape - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2296-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 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
- MDVSA-2011:127 vendor-advisory
- http://www.mozilla.org/security/announce/2011/mfsa2011-31.html
- http://www.mozilla.org/security/announce/2011/mfsa2011-30.html
- DSA-2297 vendor-advisory
- SUSE-SU-2011:0967 vendor-advisory
- DSA-2296 vendor-advisory
- http://www.mozilla.org/security/announce/2011/mfsa2011-33.html
- RHSA-2011:1166 vendor-advisory
- SUSE-SA:2011:037 vendor-advisory
- RHSA-2011:1164 vendor-advisory
- oval:org.mitre.oval:def:14502 vdb-entry signature
- DSA-2295 vendor-advisory
- http://www.mozilla.org/security/announce/2011/mfsa2011-29.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=648094