Use-after-free vulnerability in WebKit in Apple Safari before 4.0.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via vectors related to the run-in Cascading Style Sheets (CSS) display property. Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html
CVE-ID: CVE-2010-0053
Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11,
Mac OS X v10.5.8, Mac OS X Server v10.5.8,
Mac OS X v10.6.1 or later, Mac OS X Server v10.6.1 or later,
Windows 7, Vista, XP
Impact: Visiting a maliciously crafted website may lead to an
unexpected application termination or arbitrary code execution
Description: A use-after-free issue exists in the rendering of
content with a CSS display property set to 'run-in'. Visiting a
maliciously crafted website may lead to an unexpected application
termination or arbitrary code execution. This issue is addressed
through improved memory reference tracking. Credit to wushi of
team509, working with TippingPoint's Zero Day Initiative for
reporting this issue.
Publication date: Mon, 15 Mar 2010 19:15:00 +0000