Technical Description

A vulnerability has been identified in Apple Mac OS X, which could be exploited by remote attackers to execute arbitrary commands. This flaw is due to an error when processing specially crafted resource forks and HFS meta-data stored in the "__MACOSX" folder (in a ZIP archive) or in email messages with an AppleDouble MIME type, which could be exploited by remote attackers to execute arbitrary shell commands and compromise a vulnerable system by convincing a user to open a malicious email attachment or visit a specially crafted Web page that is designed to automatically exploit this vulnerability through Safari [...]

Solution

Security Update 2006-002 for Mac OS X 10.4.5 (PPC) :
http://www.apple.com/support/downloads/securityupdate2006002macosx1045ppc.html
Security Update 2006-002 for Mac OS X 10.4.5 Client (Intel) :
http://www.apple.com/support/downloads/securityupdate2006002macosx1045clientintel.html
Security Update 2006-002 for Mac OS X 10.3.9 Client :
http://www.apple.com/support/downloads/securityupdate20060021039client.html
Security Update 2006-002 for Mac OS X 10.3.9 Server :
http://www.apple.com/support/downloads/securityupdate20060021039server.html

Credits

Vulnerability reported by Michael Lehn

ChangeLog

2006-02-21 : Initial release
2006-02-22 : Exploit released
2006-03-01 : Updated Solution (Security Update 2006-001)
2006-03-13 : Updated Solution (Security Update 2006-002)

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