TITLE:
Mac OS X KHTMLParser Denial of Service Weakness

SECUNIA ADVISORY ID:
SA18220

VERIFY ADVISORY:
http://secunia.com/advisories/18220/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
>From remote

OPERATING SYSTEM:
Apple Macintosh OS X
http://secunia.com/product/96/

DESCRIPTION:
Tom Ferris has discovered a weakness in Mac OS X, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The weakness is caused due to an error in the KHTMLParser when
parsing certain malformed HTML documents. This can be exploited to
crash an application that uses the parser via a specially crafted
HTML file. In certain cases, this may cause the system to become
unresponsive.

The weakness has been confirmed to affect TextEdit and Safari in Mac
OS X with Security Update 2005-009. Other applications that use the
parser may also be affected.

SOLUTION:
Do not open or follow links to HTML files from non-trusted sources.

PROVIDED AND/OR DISCOVERED BY:
Tom Ferris

ORIGINAL ADVISORY:
http://security-protocols.com/advisory/sp-x22-advisory.txt

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