Vulnerability scanner

Information security
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Internet security Cyberwarfare Computer security Mobile security Network security
Threats
Computer crime Vulnerability Eavesdropping Exploits Trojans Viruses and worms Denial of service Malware Payloads Rootkits Keyloggers
Defenses
Computer access control Application security Antivirus software Secure coding Security by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Firewall (computing) Intrusion detection system Intrusion prevention system Mobile secure gateway

A vulnerability scanner is a computer program designed to assess computers, computer systems, networks or applications for weaknesses. In plain words, these scanners are used to discover the weak points or poorly constructed parts.

They can be run either as part of vulnerability management by those tasked with protecting systems - or by black hat attackers looking to gain unauthorized access.

Types

Part of a server log, showing attempts by a scanner to find the administration page.
220.128.235.XXX - - [26/Aug/2010:03:00:09 +0200] "GET /db/db/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:09 +0200] "GET /db/myadmin/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:10 +0200] "GET /db/webadmin/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:10 +0200] "GET /db/dbweb/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:11 +0200] "GET /db/websql/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:11 +0200] "GET /db/webdb/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:13 +0200] "GET /db/dbadmin/main.php HTTP/1.0" 404 - "-" "-" 220.128.235.XXX - - [26/Aug/2010:03:00:13 +0200] "GET /db/db-admin/main.php HTTP/1.0" 404 - "-" "-" (..)

Part of a server log, showing attempts by a scanner to find the administration page.

220.128.235.XXX - - [26/Aug/2010:03:00:09 +0200] "GET /db/db/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:09 +0200] "GET /db/myadmin/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:10 +0200] "GET /db/webadmin/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:10 +0200] "GET /db/dbweb/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:11 +0200] "GET /db/websql/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:11 +0200] "GET /db/webdb/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:13 +0200] "GET /db/dbadmin/main.php HTTP/1.0" 404 - "-" "-"
220.128.235.XXX - - [26/Aug/2010:03:00:13 +0200] "GET /db/db-admin/main.php HTTP/1.0" 404 - "-" "-"
(..)

Port scanner (e.g. Nmap)
Network vulnerability scanner (e.g. Nessus, SAINT, OpenVAS, INFRA Security Scanner, Nexpose)
Web application security scanner (e.g. Nikto, Acunetix, Burp Suite, OWASP ZAP, w3af)
Database security scanner
Host based vulnerability scanner (Lynis)
ERP security scanner
Single vulnerability tests

External links

Vulnerability Scanning Tools, list at OWASP

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