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Category:   Application (Database)  >   IBM DB2 Vendors:   IBM
(IBM Issues Fix for IBM DB2) Samba SMB1 UNIX Extensions Symlink Flaw Lets Remote Authenticated Users Overwrite Access Control Lists
SecurityTracker Alert ID:  1036457
SecurityTracker URL:  http://securitytracker.com/id/1036457
CVE Reference:   CVE-2015-7560   (Links to External Site)
Date:  Jul 27 2016
Impact:   Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 10.1, 10.5, 11.1
Description:   A vulnerability was reported in Samba. A remote authenticated user can overwrite access control lists. IBM DB2 is affected.

A remote authenticated user can invoke SMB1 UNIX extensions to create a symbolic link (symlink) and then issue a non-UNIX SMB1 call to overwrite the owner and group access control list (ACL) on the target file or directory.

Jeremy Allison of Google, Inc. reported this vulnerability.

Impact:   A remote authenticated user can overwrite the access control list (ACL) on the target file or directory.
Solution:   IBM has issued a fix for IBM DB2 LUW.

The IBM advisory is available at:

http://www-01.ibm.com/support/docview.wss?uid=swg21986595

Vendor URL:  www-01.ibm.com/support/docview.wss?uid=swg21986595 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (AIX)

Message History:   This archive entry is a follow-up to the message listed below.
Mar 9 2016 Samba SMB1 UNIX Extensions Symlink Flaw Lets Remote Authenticated Users Overwrite Access Control Lists



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