OpenCA prior 0.9.1.6 signature verification bypass 2.0
 
Plugin ID221
Plugin nameOpenCA prior 0.9.1.6 signature verification bypass
Plugin filenameOpenCA prior 0.9.1.6 signature verification bypass.plugin
Plugin filesize3781 bytes
Plugin familyCGI
Plugin created nameMarc Ruef
Plugin created emailmarc dot ruef at computec dot ch
Plugin created webhttp://www.computec.ch
Plugin created companycomputec.ch
Plugin created date2004/09/14
Plugin updated nameMarc Ruef
Plugin updated emailmarc dot ruef at computec dot ch
Plugin updated webhttp://www.computec.ch
Plugin updated companycomputec.ch
Plugin updated date2004/11/14
Plugin version2.0
Plugin changelogCorrected the plugin structure and added the accuracy values in 1.1. Improved the pattern matching and introduced the plugin changelog in 2.0
Plugin protocoltcp
Plugin port80
Plugin procedure detectionopen|send GET /cgi-bin/pub/pki?cmd=serverInfo HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/#.# ### *Server Information for OpenCA Server Version 0.[0-8].#* OR HTTP/#.# ### *Server Information for OpenCA Server Version 0.9.0.#* OR HTTP/#.# ### *Server Information for OpenCA Server Version 0.9.1.[0-6]*
Plugin detection accuracy85
Plugin commentCheck is inspired by the Nessus plugin (see Nessus ID listed in the sources).
Bug published nameAlexandru Matei
Bug published emailmichael dot bell at cms dot hu-berlin dot de
Bug published date2004/01/16
Bug advisoryhttp://www.openca.org/news/CAN-2004-0004.txt
Bug affectedOpenCA prior 0.9.2-RC6
Bug not affectedOpenCA newer than 0.9.2-RC6 or other solutions
Bug vulnerability classWeak Authentication
Bug descriptionThe remote host seems to be running OpenCA, an open Certificate Authority. The software version prior 0.9.2-RC6 may allow a remote attacker to bypass the signature verification.
Bug solutionThe server should be deactivated or de-installed if not necessary. If this is not possible, you should patch or upgrade the software to the latest version. To make it harder to find the server the HTTP daemon could be configured to listen at another port (e.g. 8081). Try to prevent unwanted connection attempts by filtering traffic with firewalling. Alternation of the application banner can confuse an attacker and let him determine the wrong software.
Bug fixing timeApprox. 1 hour
Bug exploit availabilityMaybe
Bug exploit urlhttp://www.securityfocus.com/bid/9435/exploit/
Bug remoteYes
Bug localNo
Bug severityMedium
Bug popularity7
Bug simplicity6
Bug impact8
Bug risk6
Bug Nessus riskMedium
Bug check toolsNessus is able to do the same check.
Source CVECAN-2004-0004
Source SecurityFocus BID9435
Source OSVDB ID3615
Source Nessus ID14715
Source LiteratureHacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427
Source Misc.http://www.securityfocus.com/archive/1/349993

This file was generated by the Attack Tool Kit (ATK), the open-sourced security scanner and exploiting framework.