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TITLE:
A-Blog "navigation_start" Parameter File Inclusion

SECUNIA ADVISORY ID:
SA22061

VERIFY ADVISORY:
http://secunia.com/advisories/22061/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
A-Blog 2.x
http://secunia.com/product/12126/

DESCRIPTION:
Drago84 has discovered a vulnerability in A-Blog, which can be
exploited by malicious people to compromise a vulnerable system.

Input passed to the "navigation_start" parameter in
navigation/menu.php isn't properly verified, before it is used to
include files. This can be exploited to include arbitrary files from
external and local resources.

Successful exploitation requires that "register_globals" is enabled.

The vulnerability has been confirmed in version 2. Other versions may
also be affected.

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

Set "register_globals" to "Off".

PROVIDED AND/OR DISCOVERED BY:
Drago84

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/2436

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

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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.

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