Description
The counters functionality in the Cascading Style Sheets (CSS) implementation in WebKit in Apple Safari before 5.0.1 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1.1 on Mac OS X 10.4; and webkitgtk before 1.2.6; allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted HTML 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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | webkitgtk +2 | 1.2.6-2.el6_0 | RHSA-2011:0177 |
Advisories 1
- RHSA-2011:0177 Red Hat Security Advisory: webkitgtk security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- MDVSA-2011:039 vendor-advisory
- ADV-2010-2722 vdb-entry
- 43068 third-party-advisory
- APPLE-SA-2010-09-08-1 vendor-advisory
- http://support.apple.com/kb/HT4334
- http://support.apple.com/kb/HT4276
- USN-1006-1 vendor-advisory
- 41856 third-party-advisory
- ADV-2011-0212 vdb-entry
- APPLE-SA-2010-07-28-1 vendor-advisory
- oval:org.mitre.oval:def:11766 vdb-entry signature
- ADV-2011-0216 vdb-entry
- 43086 third-party-advisory
- SUSE-SR:2011:002 vendor-advisory
- 42314 third-party-advisory
- RHSA-2011:0177 vendor-advisory
- ADV-2011-0552 vdb-entry
- 42020 vdb-entry
- http://support.apple.com/kb/HT4456
- SUSE-SR:2010:018 vendor-advisory
- APPLE-SA-2010-11-22-1 vendor-advisory