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A Vulnerability Assessment NIKTO

A Vulnerability Assessment NIKTO. Description. Nikto is a web server scanner which performs comprehensive tests against web server for multiple items 2600 potentially dangerous files/CGIs Versions on over 625 servers Version specific problems on over 230 servers

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A Vulnerability Assessment NIKTO

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  1. A Vulnerability AssessmentNIKTO

  2. Description • Nikto is a web server scanner which performs comprehensive tests against web server for multiple items • 2600 potentially dangerous files/CGIs • Versions on over 625 servers • Version specific problems on over 230 servers • Nikto support for LibWhisker’s anti-IDS methods (IDS evasion)

  3. Description • Nikto perform security or information checks • Misconfigurations • Default files and scripts • Insecure files and scripts • Outdate software

  4. Purpose • To understand what is vulnerability scanner, and why we need it • To family with the operation of the Nikto vulnerability scanner.

  5. Principle and Pre-study • A look at whisker's anti-IDS tactics • an HTTP request defined by RFC 1945 • Types of IDS • Smart • Raw

  6. IDS evasion

  7. Required Facilities • Permission • Do not proceed without receiving the necessary permissions • Hardware: • PC or Workstation with UNIX-based OS • Software • Perl 5.004 • Nikto 1.32 • NET::SSLeay • LibWhisker • OpenSSL

  8. Step (I): install Nikto Install nikto with port tree After install nikto, patch /usr/local/bin/nikto.pl to indicate the config.txt patch /usr/local/etc/nikto/config.txt to indicate the plugin directory

  9. IDS evasion option mutate checks option IDS evasion method

  10. Basic scan information Web server banner and basic function Report some vulnerability and suggest the solution Report the result

  11. Step (II): execute nikto Basic scan information Web server banner and basic function Report some vulnerability and suggest the solution Report the result

  12. Step (III): IDS evasion Detection with IDS evasion method 1 2 on target 140.123.113.86

  13. Summary • CGI exploits are everywhere. It is most important that you scan your own site so that you can see what attackers might see. • Nikto is a PERL, open source web server scanner which supports SSL. It checks for remote web server vulnerabilities and misconfigurations.

  14. Reference • Nikto • http://www.cirt.net/code/nikto.html • Comprehensive Perl Archive Network • http://www.cpan.org • LibWhisker • http://www.wiretrip.net/rfp/lw.asp • A look at whisker’s anti-IDS tactics • http://www.wiretrip.net/rfp/txt/whiskerids.html

  15. Outline • A Real World Attack: wu-ftp • Vulnerability Scanners • All-Purpose Tools • Application Inspection • TRIPWIRE & MD5

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