TITLE:
Mailgust "showfullcsv" Information Disclosure Vulnerability

SECUNIA ADVISORY ID:
SA18998

VERIFY ADVISORY:
http://secunia.com/advisories/18998/

CRITICAL:
Moderately critical

IMPACT:
Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
Mailgust 1.x
http://secunia.com/product/5763/

DESCRIPTION:
Nemesis Security Audit Group has discovered a vulnerability in
Mailgust, which can be exploited by malicious people to disclose
certain sensitive information.

The vulnerability is caused due to an access control error in the
"showfullcsv" method of index.php. This can be exploited to retrieve
the mailing list configuration, which includes the POP3 username and
password, without requiring any authentication.

The vulnerability has been confirmed in version 1.9. Other versions
may also be affected.

SOLUTION:
Edit the source code to ensure that access control is properly
enforced.

PROVIDED AND/OR DISCOVERED BY:
Nemesis Security Audit Group

ORIGINAL ADVISORY:
http://nsag.ru/vuln/890.html

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