full-disclosure - nmap <= 5.21 is vulnerable to Windows DLL Hijacking Vulnerability.

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Message-ID: <447388.17970.qm@web137407.mail.in.yahoo.com>
Date: Sun, 5 Sep 2010 19:01:19 +0530 (IST)
From: Nikhil Mittal <nikhil_uitrgpv@...oo.co.in>
To: full-disclosure@...ts.grok.org.uk
Subject: nmap <= 5.21 is vulnerable to Windows DLL
	Hijacking Vulnerability.

1. Overview
nmap <= 5.21 is vulnerable to Windows DLL Hijacking Vulnerability. 

2. Vulnerability Description
nmap passes insufficiently qualified path for the dll "airpcap.dll" while opening a file using nmap

Timeline
27-08-2010 - Discovered Vulnerability
31-08-2010 - Disclosed at nmap-dev mailing list
04-09-2010 - Response and fix from developers
05-09-2010 - Disclosure

3. Exploitability
A file extension needs to be registered with nmap to exploit the vulnerability and a crafted file needs to be 
opened from a network share. Currently nmap is not registered with any filename so users are not at risk by default.

4. Versions Affected
nmap 5.21 and lower.

5. POC/Exploit
Done with Webdav hijack module of Metasploit.

6. Impact
Remote Code Execution in context of nmap process.

7. References
http://seclists.org/nmap-dev/2010/q3/632

8. Solution
Fixed in latest development release.

Regards,

Nikhil Mittal

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