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Category:   Application (File Transfer/Sharing)  >   Samba Vendors:   Samba.org
Samba Local Security Authority Bug Lets Remote Authenticated Users Gain Elevated Privileges
SecurityTracker Alert ID:  1026988
SecurityTracker URL:  http://securitytracker.com/id/1026988
CVE Reference:   CVE-2012-2111   (Links to External Site)
Date:  Apr 30 2012
Impact:   Modification of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.4.x - 3.6.4
Description:   A vulnerability was reported in Samba. A remote authenticated user can modify user privileges on the target system.

Security checks are not properly applied to the CreateAccount, OpenAccount, AddAccountRights, and RemoveAccountRights RPC calls. A remote authenticated user can connect to the Local Security Authority (LSA) and modify the privileges database.

A remote authenticated user can grant themselves the "take ownership" privilege and then change the ownership of a file or directories on the target system.

Ivano Cristofolini reported this vulnerability.

Impact:   A remote authenticated user can modify Samba user privileges on the target system.
Solution:   The vendor has issued a fix (3.4.17, 3.5.15, 3.6.5).

The vendor's advisory is available at:

http://www.samba.org/samba/security/CVE-2012-2111

Vendor URL:  www.samba.org/samba/security/CVE-2012-2111 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Apr 30 2012 (Red Hat Issues Fix) Samba Local Security Authority Bug Lets Remote Authenticated Users Gain Elevated Privileges
Red Hat has issued a fix for Red Hat Enterprise Linux 5 and 6.
Jun 25 2012 (Gentoo Issues Fix) Samba Local Security Authority Bug Lets Remote Authenticated Users Gain Elevated Privileges
Gentoo has issued a fix.
Jul 26 2012 (HP Issues Fix for HP-UX) Samba Local Security Authority Bug Lets Remote Authenticated Users Gain Elevated Privileges
HP has issued a fix for HP-UX.



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