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Secunia Advisory SA10816

Linux VServer Chroot Escape Vulnerability
Secunia Advisory SA10816
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Release Date 2004-02-09
   
Popularity 7,496 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:
Linux VServer 1.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) No CVE references.
  

Description
Markus Müller has identified a vulnerability in Linux VServer, allowing malicious users to break out of the chroot jail.

The problem is that it is possible to traverse out of the chroot jail using a variant of the chroot-again exploit.

The vulnerability has been reported in version 1.24 on kernel 2.4.24. Other versions may also be affected.

A Proof of Concept exploit has been published.

Solution
Update to version 1.26:
Further details available in Customer Area

Provided and/or discovered by
Markus Müller

Original Advisory
http://www.linux-vserver.org/index.php?page=ChangeLog

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 VServer Chroot Escape Vulnerability
 
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