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Secunia Advisory SA26764

Samba "winbind nss info" Privilege Escalation Security Issue
Secunia Advisory SA26764
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Release Date 2007-09-12
   
Popularity 9,038 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Privilege escalation
Where Local system
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
Samba 3.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2007-4138 CVSS available in Customer Area
  

Description
A security issue has been reported in Samba, which can be exploited by malicious, local users to gain escalated privileges.

The security issue is caused due to Winbind incorrectly assigning a primary group id of 0 to the queried domain user when "winbind nss info" is set to "sfu" or "rfc2307". This can be exploited to gain escalated privileges, but requires that the RFC2307 or SFU (Services for Unix) primary group attributes are missing.

The security issue is reported in Samba versions from 3.0.25 to 3.0.25c.

Solution
Update to version 3.0.26.
Further details available in Customer Area

Provided and/or discovered by
The vendor credits Rick King.

Original Advisory
http://samba.org/samba/security/CVE-2007-4138.html

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com
Subject: Samba "winbind nss info" Privilege Escalation Security Issue
 
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