Description
WebKit in Apple Safari 4.x before 4.1.2 and 5.x before 5.0.2; Android before 2.2; and webkitgtk before 1.2.6; does not properly validate floating-point data, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted HTML document, related to non-standard NaN representation.
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 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 2
- Google Android 2.0/2.1 - Use-After-Free Remote Code Execution on Webkit EDB-15548 · remote · Nov 15, 2010 · verified
- Google Android 2.0 < 2.1 - Code Execution (Reverse Shell 10.0.2.2:2222/TCP) EDB-15423 · remote · Nov 5, 2010
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
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
- http://trac.webkit.org/changeset/64706
- ADV-2010-2722 vdb-entry
- 43068 third-party-advisory
- USN-1006-1 vendor-advisory
- 41856 third-party-advisory
- ADV-2011-0212 vdb-entry
- ADV-2010-3046 vdb-entry
- ADV-2011-0216 vdb-entry
- APPLE-SA-2010-09-07-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=627703
- http://www.computerworld.com/s/article/9195058/Researcher_to_release_Web_based_Android_attack
- oval:org.mitre.oval:def:11964 vdb-entry signature
- 43047 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
- http://support.apple.com/kb/HT4456
- APPLE-SA-2010-11-22-1 vendor-advisory
- http://support.apple.com/kb/HT4333