Description
The HZ-GB-2312 character-set implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 does not properly handle a ~ (tilde) character in proximity to a chunk delimiter, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document.
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 | 2.0.11-17 | DSA-2584-1 |
| Debian 6.0 | icedove | 3.0.11-1+squeeze15 | DSA-2588-1 |
| Debian 6.0 | iceweasel | 3.5.16-20 | DSA-2583-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox +3 | 10.0.11-1.el6_3 | RHSA-2012:1483, RHSA-2012:1482 |
| RHEL 5 | firefox +3 | 10.0.11-1.el5_8 | RHSA-2012:1483, RHSA-2012:1482 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 10.0.11-1.el5_8 | RHSA-2012:1483 |
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-2012:1483 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2012:1482 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2583-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2588-1 icedove - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2584-1 iceape - 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
- 87587 vdb-entry
- USN-1638-3 vendor-advisory
- 51370 third-party-advisory
- USN-1638-2 vendor-advisory
- openSUSE-SU-2012:1586 vendor-advisory
- USN-1636-1 vendor-advisory
- openSUSE-SU-2013:0175 vendor-advisory
- RHSA-2012:1483 vendor-advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-101.html
- DSA-2584 vendor-advisory
- http://www.palemoon.org/releasenotes-ng.shtml
- RHSA-2012:1482 vendor-advisory
- 51434 third-party-advisory
- openSUSE-SU-2012:1583 vendor-advisory
- 51439 third-party-advisory
- 51440 third-party-advisory
- USN-1638-1 vendor-advisory
- 56632 vdb-entry
- SUSE-SU-2012:1592 vendor-advisory
- 51359 third-party-advisory
- MDVSA-2012:173 vendor-advisory
- openSUSE-SU-2012:1585 vendor-advisory
- 51381 third-party-advisory
- DSA-2583 vendor-advisory
- firefox-hzgb2312-xss(80179) vdb-entry
- 51369 third-party-advisory
- 51360 third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=801681
- DSA-2588 vendor-advisory
- oval:org.mitre.oval:def:16955 vdb-entry signature