TITLE:
vpopmail Cleartext Password Authentication Bypass

SECUNIA ADVISORY ID:
SA19987

VERIFY ADVISORY:
http://secunia.com/advisories/19987/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
vpopmail 5.x
http://secunia.com/product/2294/

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

The security issue is caused due to an error within the handling of
SMTP AUTH and APOP password authentication. This can be exploited to
authenticate to the mail server using a blank password.

Successful exploitation requires that cleartext password
authentication is enabled and that the account does not have a
cleartext password set.

The security issue has been reported in versions 5.4.14 and 5.4.15.
Prior versions may also be affected.

SOLUTION:
The security issue has been fixed in development version 5.4.16.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://sourceforge.net/project/shownotes.php?release_id=415350

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