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ProFTPD Auth API Multiple Authentication Modules Security Issue

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Release Date:  2007-04-18    Last Update:  2007-04-27    Views:  12,752

Secunia Advisory SA24867

Where:

From remote

Impact:

Security Bypass

Solution Status:

Vendor Workaround

CVE Reference(s):

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

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 to Secunia VIM customers

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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