Nikto 2.1.0 – Web Server Security Scanning Tool

For those that don’t know, Nikto is an Open Source (GPL) web server scanner which performs comprehensive tests against web servers for multiple items, including over 3500 potentially dangerous files/CGIs, versions on over 900 servers, and version specific problems on over 250 servers. Scan items and plugins are frequently updated and can be automatically updated (if desired).

Nikto is not designed as an overly stealthy tool. It will test a web server in the shortest timespan possible, and it’s fairly obvious in log files. However, there is support for LibWhisker’s anti-IDS methods in case you want to give it a try (or test your IDS system).

Changes

This version has gone through significant rewrites under the hood to how Nikto works, to make it more expandable and usable.

• Rewrite to the plugin engine allowing more control of the plugin structure and making it easier to add plugins
• Rewrite to the reporting engine allowing reporting plugins to cover more and also ensuring that output is written if Nikto is quit before finishing
• Large overhaul of documentation to document built-in methods and variables
• Addition of caching to reduce amount of calls made to the web servers, as well as a facility to disable smart 404 guessing.
• Addition of simple guessing for whether a system is an embedded device and to report what it is
• Plugin to use OWASPs dictionary lists to attempt to brute force directories on the remote web server (as mutate 6)
• Plugin to attempt to brute force domains (as mutate 5)
• Allow username guessing (mutate 3 and 4) to use a dictionary file as well as brute forcing
• Support for NTLM authentication
• Lots of bug fixes and new security checks

You can download Nikon 2.1.0 here:

nikto-current.tar.gz

Plugins and DB can be found here.

Or read more here.

Naptha – TCP State Exhaustion Vulnerability & Tool

The Naptha vulnerabilities are a type of denial-of-service vulnerabilities researched and documented by Bob Keyes of BindView’s RAZOR Security Team in 2000. The vulnerabilities exist in some implementations of the TCP protocol, specifically in the way some TCP implementations keep track of the state of TCP connections, and allow an attacker to exhaust the resources of a system under attack without utilizing much resources on the system used to launch the attack.

The following links provide more information about the Naptha denial-of-service vulnerabilities:

• The original BindView advisory is archived here.
• The advisory that CERT/CC published for the Naptha vulnerabilities is here.

The Tool

To study and show the Naptha vulnerabilities, Bob Keyes wrote the Naptha tool. The tool was written in C and used libpcap to read packets from the network and libdnet to craft packets.

The Naptha tool actually consists of two programs: a program called synsend whose only function is to send TCP SYN packets to the target system, and a program called srvr whose function is to respond to specific traffic received from the target system with TCP packets with specific TCP flags set. Both what traffic to respond to and how to respond to it are specified by the user via command-line arguments.

You can download Naptha here:

naptha-1.1.tgz

Or read more here.

Nat Probe – NAT Detection Tool

This little, but very useful program, try to sends ICMP packet out the LAN, and detect all the host that allow it. Whit this you can find bugs in your (company?) network ( or others), for example hosts that allow p2p connections.

Explanation

When we use a Gateway, we send the packets with IP destination of the target, but the destination MAC on the ethernet is the MAC at the Gateway. If we send a packet to the different MACs in the LAN, we can know who is the gateway when we receive an response from this MAC.

Some times we can discover more than one box configured to be an gateway, generally, this is an wrong configuration, and the box will response with an ICMP-Redirect. This is the same, because the script only verify if the mac response.

NatProbe is develop in Python with the Scapy library.

You can download Nat Probe here:

natprobe.1.0.tar.gz

Or read more here.