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Nmap Http-domino-enum-passwords File Upload

Nmap Http-domino-enum-passwords File Upload
Posted Aug 7, 2013
Authored by Piotr Duszynski | Site trustwave.com

An arbitrary file upload vulnerability exists in the official Nmap Http-domino-enum-passwords NSE script.

tags | advisory, web, arbitrary, file upload
advisories | CVE-2013-4885
MD5 | a5fc2d275d961f0c05933b6a24ed1221

Nmap Http-domino-enum-passwords File Upload

Change Mirror Download
Trustwave SpiderLabs Security Advisory TWSL2013-025:
Arbitrary File Upload Vulnerability in Official Nmap
Http-domino-enum-passwords NSE script

Published: 08/02/13
Version: 1.0

Vendor: Nmap (http://nmap.org/)
Product: Nmap NSE script
Version affected: Nmap 6.25

Product description:
Nmap ("Network Mapper") is a free and open source (license) utility for
network discovery and security auditing. Many systems and network
administrators also find it useful for tasks such as network inventory,
managing service upgrade schedules, and monitoring host or service uptime.
Nmap uses raw IP packets in novel ways to determine what hosts are
available on the network, what services (application name and version)
those hosts are offering, what operating systems (and OS versions) they are
running, what type of packet filters/firewalls are in use, and dozens of
other characteristics. It was designed to rapidly scan large networks, but
works fine against single hosts. Nmap runs on all major computer operating
systems, and official binary packages are available for Linux, Windows, and
Mac OS X. In addition to the classic command-line Nmap executable, the Nmap
suite includes an advanced GUI and results viewer (Zenmap), a flexible data
transfer, redirection, and debugging tool (Ncat), a utility for comparing
scan results (Ndiff), and a packet generation and response analysis tool
(Nping).


Finding 1: Arbitrary File Upload Vulnerability
*****Credit: Piotr Duszynski @drk1wi of Trustwave SpiderLabs
CVE: CVE-2013-4885

It is possible to write arbitrary files to a remote system, through a
specially crafted server response for NMAP http-domino-enum-passwords.nse
script (from the official Nmap repository).


Example vulnerable command:

nmap --script domino-enum-passwords -p 80 <evil_host> --script-args domino-enum-passwords.username='patrik karlsson',domino-enum-passwords.password=secret,domino-enum-passwords.idpath='/tmp'


Vulnerable code:

...
local status, err = saveIDFile( ("%s/%s.id"):format(download_path, u_details.fullname), http_response.body )
...

This issue can be only exploited if the 'domino-enum-passwords.idpath'
parameter is present. In order to bypass the second format string
parameter "%s.id" and be able to write arbitrary files to the operating
system the following payload should be appended to the first format string
parameter value:

"\x00\x61\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x5c\x25\x64\x0d\x0a"

Fully functional exploit for this vulnerability is available in the
Portspoof git repository.


Remediation Steps:
The vendor has released an official patch for this vulnerability. It is
recommended to upgrade to Nmap 6.40.

Revision History:
07/18/13 - Vulnerability disclosed to vendor
07/29/13 - Patch released by vendor
08/02/13 - Advisory published

References
1. http://nmap.org/changelog.html

About Trustwave:
Trustwave is the leading provider of on-demand and subscription-based
information security and payment card industry compliance management
solutions to businesses and government entities throughout the world. For
organizations faced with today's challenging data security and compliance
environment, Trustwave provides a unique approach with comprehensive
solutions that include its flagship TrustKeeper compliance management
software and other proprietary security solutions. Trustwave has helped
thousands of organizations--ranging from Fortune 500 businesses and large
financial institutions to small and medium-sized retailers--manage
compliance and secure their network infrastructure, data communications and
critical information assets. Trustwave is headquartered in Chicago with
offices throughout North America, South America, Europe, Africa, China and
Australia. For more information, visit https://www.trustwave.com

About Trustwave SpiderLabs:
SpiderLabs(R) is the advanced security team at Trustwave focused on
application security, incident response, penetration testing, physical
security and security research. The team has performed over a thousand
incident investigations, thousands of penetration tests and hundreds of
application security tests globally. In addition, the SpiderLabs Research
team provides intelligence through bleeding-edge research and proof of
concept tool development to enhance Trustwave's products and services.
https://www.trustwave.com/spiderlabs

Disclaimer:
The information provided in this advisory is provided "as is" without
warranty of any kind. Trustwave disclaims all warranties, either express or
implied, including the warranties of merchantability and fitness for a
particular purpose. In no event shall Trustwave or its suppliers be liable
for any damages whatsoever including direct, indirect, incidental,
consequential, loss of business profits or special damages, even if
Trustwave or its suppliers have been advised of the possibility of such
damages. Some states do not allow the exclusion or limitation of liability
for consequential or incidental damages so the foregoing limitation may not
apply.

________________________________

This transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is strictly prohibited. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format.


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