This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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 an HTML document with improperly nested tags.
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 WebKit's handling of
incorrectly nested HTML tags. 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&Z of team509 working with TippingPoint's
Zero Day Initiative for reporting this issue.'
CVSS v2.0 Severity and Metrics:
Access Vector (AV):
Access Complexity (AC):
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service