[SA18786] SmE GB Host / Blog Host "url" BBcode Script Insertion

TITLE:
SmE GB Host / Blog Host "url" BBcode Script Insertion

SECUNIA ADVISORY ID:
SA18786

VERIFY ADVISORY:
http://secunia.com/advisories/18786/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
SmE GB Host 1.x
http://secunia.com/product/7949/
SmE Blog Host
http://secunia.com/product/7951/

DESCRIPTION:
Aliaksandr Hartsuyeu has reported a vulnerability in SmE GB Host and
SmE Blog Host, which can be exploited by malicious people to conduct
script insertion attacks.

Input passed via the "url" BBcode tag when posting 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.

The vulnerability has been reported in SmE GB Host 1.21 and SmE Blog
Host. Other versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
Aliaksandr Hartsuyeu

ORIGINAL ADVISORY:
http://evuln.com/vulns/65/summary.html

About:
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everybody keeping their systems up to date against the latest
vulnerabilities.

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http://secunia.com/about_secunia_advisories/

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