[SA21728] vtiger CRM Script Insertion and Administrative Modules Access

TITLE:
vtiger CRM Script Insertion and Administrative Modules Access

SECUNIA ADVISORY ID:
SA21728

VERIFY ADVISORY:
http://secunia.com/advisories/21728/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
vtiger CRM 4.x
http://secunia.com/product/6211/

DESCRIPTION:
Ivan Markovic has discovered some vulnerabilities in vtiger CRM,
which can be exploited by malicious people to conduct script
insertion attacks and bypass certain security restrictions.

1) Input passed to the "description" field in various modules when
e.g. creating a contact and the "solution" field when an
administrator modifies the solution in the HelpDesk modules isn't
properly sanitised before being used. This can be exploited to inject
arbitrary HTML and script code, which will be executed in a user's
browser session in context of an affected site when the malicious
user data is viewed.

2) An error in the access control verification can be exploited by a
normal user to access administrative modules (e.g. the settings
section) by accessing certain URLs directly.

The vulnerabilities have been confirmed in version 4.2.4. Other
versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised and
that access to administrative modules are properly checked.

Use another product.

PROVIDED AND/OR DISCOVERED BY:
Ivan Markovic

ORIGINAL ADVISORY:
http://www.security-net.biz/adv/D3906a.txt

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