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Category:   OS (UNIX)  >   Apple File Protocol (AFP) Vendors:   Apple
Apple File Protocol Server Kerberos Validation Bug Lets Remote Users Bypass Authentication
SecurityTracker Alert ID:  1019642
SecurityTracker URL:  http://securitytracker.com/id/1019642
CVE Reference:   CVE-2008-0045   (Links to External Site)
Date:  Mar 18 2008
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 10.4.11 and prior versions
Description:   A vulnerability was reported in the Apple File Protocol (AFP) server. A remote user can bypass authentication.

The server does not properly validate Kerberos principal realm names. When cross-realm authentication with and AFP Server is used, a remote user can bypass cross-realm authentication to connect to the server.

Mac OS X versions 10.5 and later are not affected.

Ragnar Sundblad of KTH - Royal Institute of Technology, Stockholm, Sweden reported this vulnerability.

Impact:   A remote user can bypass authentication and connect to the server.
Solution:   The vendor has issued a fix as part of Security Update 2008-002, available from the Software Update pane in System Preferences, or Apple's Software Downloads web site at:

http://www.apple.com/support/downloads/

For Mac OS X v10.5.2
The download file is named: "SecUpd2008-002.dmg"
Its SHA-1 digest is: 15083986b3ce6b73c3b894f1c2bcf5c22170236c

For Mac OS X v10.4.11 (Universal)
The download file is named: "SecUpd2008-002Univ.dmg"
Its SHA-1 digest is: 49b1c6b1a919b33cbaada1c86eb501291e7145e8

For Mac OS X v10.4.11 (PPC)
The download file is named: "SecUpd2008-002PPC.dmg"
Its SHA-1 digest is: 8a838e33b6720184a4e4e13c17392892e5a06a56

For Mac OS X Server v10.5.2
The download file is named: "SecUpdSrvr2008-002.dmg"
Its SHA-1 digest is: 2f5126096b872482315a25cd3d75bc1c0a082e84

For Mac OS X Server v10.4.11 (Universal)
The download file is named: "SecUpdSrvr2008-002Univ.dmg"
Its SHA-1 digest is: 77074bdd1d0574abe9631b12011f8ef1d15151b3

For Mac OS X Server v10.4.11 (PPC)
The download file is named: "SecUpdSrvr2008-002PPC.dmg"
Its SHA-1 digest is: 1b5f3c1464b1fce0d77f44e50a0b662b467e3fd0

The vendor's advisory is available at:

http://docs.info.apple.com/article.html?artnum=307562

Vendor URL:  docs.info.apple.com/article.html?artnum=307562 (Links to External Site)
Cause:   Access control error

Message History:   None.


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