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[SA31534] MailScan for Mail Servers Web Administration Interface Multiple Vulnerabilities

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Aug 19 2008 - 16:47:05 CDT


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TITLE:
MailScan for Mail Servers Web Administration Interface Multiple
Vulnerabilities

SECUNIA ADVISORY ID:
SA31534

VERIFY ADVISORY:
http://secunia.com/advisories/31534/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting, Exposure of sensitive
information

WHERE:
From remote

SOFTWARE:
MicroWorld MailScan for Mail Servers 5.x
http://secunia.com/product/19602/

DESCRIPTION:
Oliver Karow has reported some vulnerabilities in MailScan for Mail
Servers, which can be exploited by malicious people to disclose
potentially sensitive information, conduct cross-site scripting
attacks, and bypass certain security restrictions.

1) An input validation error within the web administration interface
can be exploited to e.g. download arbitrary files via directory
traversal attacks by sending specially crafted requests to the
vulnerable service.

2) The web administration interface does not properly restrict access
to certain pages. This can be exploited to bypass the authentication
by e.g. accessing protected pages directly.

3) Input passed via the URL to the web administration interface is
not properly sanitised before being returned to the user in case of
an error. This can be exploited to execute arbitrary HTML and script
code in a user's browser session in context of an affected website.

Successful exploitation may require that the user's browser does not
URL-encode the request (e.g. Internet Explorer).

The vulnerabilities are reported in MailScan for Mail Servers version
5.6.a with espatch1. Other versions may also be affected.

SOLUTION:
Do not browse other websites while being logged in to the web
administration interface. Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Oliver Karow

ORIGINAL ADVISORY:
http://www.oliverkarow.de/research/mailscan.txt

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