[UNIX] Admin Access Vulnerability in P-News (Records Injection)
From: SecuriTeam (support_at_securiteam.com)
Date: 05/26/03
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To: list@securiteam.com Date: 26 May 2003 18:04:48 +0200
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Admin Access Vulnerability in P-News (Records Injection)
------------------------------------------------------------------------
SUMMARY
A vulnerability in <http://www.ppopn.net/> P-News allows users with
'Member' privileges to gain elevated privileges by inserting an additional
record into the user database.
DETAILS
Vulnerable systems:
* P-News version 1.6
It is possible to gain administrative access if you possess a 'Member'
account due to a flaw in the 'p-news.php' file. The vulnerability allows
you to inject an entire arbitrary account, including all the fields, into
the 'Name' field, which will push all the restricting details to the far
end of the data string, not allowing them to be included in the login
process.
Below is an example of a normal database:
Admin|-|21232f297a57a5a743894a0e4a801fc3|-|0|-|p-news-admin@ppopn.net|-|
Peter|-|179ad45c6ce2cb97cf1029e212046e81|-|2|-|peter@aol.com|-|
Notice the '0' denotes an 'admin' account, and the '2' denotes a 'member'
account.
Exploit:
Putting the following string:
Peter|-|21232f297a57a5a743894a0e4a801fc3|-|0|-|none@nowhere.com|-|
Into the 'Name' field in the edit account information section will give
the malicious user administrative privileges. The database then looks
like:
Admin|-|21232f297a57a5a743894a0e4a801fc3|-|0|-|p-news-admin@ppopn.net|-|
Peter|-|21232f297a57a5a743894a0e4a801fc3|-|0|-|none@nowhere.com|-||-|179ad45c6ce2cb97cf1029e212046e81|-|2|-|peter@aol.com|-|
ADDITIONAL INFORMATION
The information has been provided by <mailto:peter4020@hotmail.com> Peter
Winter-Smith.
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