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TITLE:
LemonLDAP::NG User Enumeration and Cross-Site Scripting

SECUNIA ADVISORY ID:
SA33565

VERIFY ADVISORY:
http://secunia.com/advisories/33565/

CRITICAL:
Less critical

IMPACT:
Exposure of system information, Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
LemonLDAP::NG 0.x
http://secunia.com/advisories/product/21005/

DESCRIPTION:
A weakness and a vulnerability have been reported in LemonLDAP::NG,
which can be exploited by malicious people to identify valid user
accounts and conduct cross-site scripting attacks.

1) The problem is that different responses are returned depending on
whether a login attempt is performed with an invalid user name as
opposed to when only the password incorrect.

2) Input passed to the "url" parameter in e.g. index.pl is not
properly sanitised before being returned to the user. This can be
exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected website.

SOLUTION:
Update to version 0.9.3.2.

PROVIDED AND/OR DISCOVERED BY:
Publicly reported by Clément Oudot.

ORIGINAL ADVISORY:
http://mail-archive.ow2.org/lemonldap-ng-dev/2008-12/msg00004.html

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