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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

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About:
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