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Secunia Advisory SA11996

Linux Kernel File Group ID Manipulation Vulnerability
Secunia Advisory SA11996
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Release Date 2004-07-02
Last Update 2004-08-16
   
Popularity 17,304 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Manipulation of data
Where From local network
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
   
Operating System
Linux Kernel 2.4.x
Linux Kernel 2.6.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2004-0497 CVSS available in Customer Area
  

Description

SuSE has discovered a vulnerability in the Linux kernel, which can be exploited by malicious users to bypass certain security restrictions.

The vulnerability is caused due to a missing check in the "fchown()" function, allowing unauthorised manipulation of files' group ID.

Successful exploitation in the 2.4 branch requires that the file system is shared via NFS.


Solution
Update to version 2.4.27 or 2.6.8.
Further details available in Customer Area

Provided and/or discovered by
Michael Schroeder and Ruediger Oertel, SuSE Linux.

Changelog
Further details available in Customer Area

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: Linux Kernel File Group ID Manipulation Vulnerability
 
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