TITLE:
SimpBook "message" Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA18256

VERIFY ADVISORY:
http://secunia.com/advisories/18256/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
SimpBook 1.x
http://secunia.com/product/6668/

DESCRIPTION:
0o_zeus_o0 has discovered a vulnerability in SimpBook, which can be
exploited by malicious people to conduct script insertion attacks.

Input passed to the "message" field isn't sanitised before being
stored in the guestbook. This can be exploited to execute arbitrary
script code in a user's browser session in context of an affected
website when a malicious guestbook entry is viewed.

Successful exploitation requires that "html_enable" is set to "on" in
"config.php". This is set to "on" in the default installation.

The vulnerability has been confirmed in version 1.0. Other versions
may also be affected.

SOLUTION:
Set "html_enable" to "off" in "config.php" or edit the source code to
ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
0o_zeus_o0

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------