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

Try a new way to discover vulnerabilities that ALREADY EXIST in your
IT infrastructure.

The Secunia NSI enables you to INSPECT, DISCOVER, and DOCUMENT
vulnerabilities in more than 4,700 different Windows applications.

Request your account, the Secunia Network Software Inspector (NSI):
http://secunia.com/network_software_inspector/

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

TITLE:
LightBlog Security Bypass and File Upload Vulnerabilities

SECUNIA ADVISORY ID:
SA27164

VERIFY ADVISORY:
http://secunia.com/advisories/27164/

CRITICAL:
Highly critical

IMPACT:
Security Bypass, Manipulation of data, System access

WHERE:
>From remote

SOFTWARE:
LightBlog 8.x
http://secunia.com/product/16040/

DESCRIPTION:
BlackHawk has discovered two vulnerabilities in LightBlog, which can
be exploited by malicious people to bypass certain security
restrictions and to compromise a vulnerable system.

1) The main.php script fails to validate the extension of an uploaded
file. This can be exploited to upload files with arbitrary extensions
(e.g. ".php") and execute arbitrary PHP code on the server.

2) The cp_memberedit.php script does not properly restrict access to
logged in users. This can be exploited to give a user administrator
privileges.

Successful exploitation of this vulnerability requires that
"register_globals" is enabled.

The vulnerabilities are confirmed in version 8.5 and reported in
version 8.4.1.1. Other versions may also be affected.

SOLUTION:
Restrict access to cp_memberedit.php (e.g. with an ".htaccess" file).
Implement whitelisting functionality that only lets people upload
files with certain extensions.

Use another product.

PROVIDED AND/OR DISCOVERED BY:
BlackHawk

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/4505

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

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.

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