[security-alerts] FW: [SA24867] ProFTPD Auth API Multiple Authentication Modules Security Issue

["Kazennov, Vladimir" <Vladimir.Kazennov@xxxxxxxxxx>]

> ----------------------------------------------------------------------
> 
> TITLE:
> ProFTPD Auth API Multiple Authentication Modules Security Issue
> 
> SECUNIA ADVISORY ID:
> SA24867
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/24867/
> 
> CRITICAL:
> Less critical
> 
> IMPACT:
> Security Bypass
> 
> WHERE:
> From remote
> 
> SOFTWARE:
> ProFTPD 1.3.x
> http://secunia.com/product/5430/
> ProFTPD 1.2.x
> http://secunia.com/product/1250/
> 
> 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
>