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Secunia Advisory SA24867

ProFTPD Auth API Multiple Authentication Modules Security Issue
Secunia Advisory SA24867
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Release Date 2007-04-18
Last Update 2007-04-27
   
Popularity 11,475 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Security Bypass
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Workaround
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
ProFTPD 1.2.x
ProFTPD 1.3.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2007-2165 CVSS available in Customer Area
  

Description

A security issue has been reported in ProFTPD, which potentially can be exploited by malicious people to bypass certain security restrictions.

The security issue is caused due to an error within ProFTPD's Auth API. If multiple authentication modules are used, it is possible that one module provides data, which is then authenticated against another module. This can e.g. be exploited to bypass certain security restrictions if authentication modules are configured with different policies.


Solution
Fixed in the CVS repository.

Provided and/or discovered by
Evgeni Golov

Changelog
Further details available in Customer Area

Original Advisory
ProFTPD:
http://bugs.proftpd.org/show_bug.cgi?id=2922

Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=419255

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: ProFTPD Auth API Multiple Authentication Modules Security Issue
 
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