<plugin_id>55</plugin_id>
<plugin_name>Corel Linux FTP Server detection</plugin_name>
<plugin_family>FTP</plugin_family>
<plugin_created_date>2003/11/14</plugin_created_date>
<plugin_created_name>Marc Ruef</plugin_created_name>
<plugin_created_email>marc dot ruef at computec dot ch</plugin_created_email>
<plugin_created_web>http://www.computec.ch</plugin_created_web>
<plugin_created_company>computec.ch</plugin_created_company>
<plugin_updated_name>Marc Ruef</plugin_updated_name>
<plugin_updated_email>marc dot ruef at computec dot ch</plugin_updated_email>
<plugin_updated_web>http://www.computec.ch</plugin_updated_web>
<plugin_updated_company>computec.ch</plugin_updated_company>
<plugin_updated_date>2004/11/13</plugin_updated_date>
<plugin_version>1.3</plugin_version>
<plugin_changelog>Corrected the plugin structure and added the accuracy values in 1.3</plugin_changelog>
<plugin_protocol>tcp</plugin_protocol>
<plugin_port>21</plugin_port>
<plugin_procedure_detection>open|sleep|close|pattern_exists .corel.ca]</plugin_procedure_detection>
<plugin_detection_accuracy>90</plugin_detection_accuracy>
<plugin_comment>Banner is copied from the ftp.txt from GFI LANguard.</plugin_comment>
<bug_affected>Corel Linux FTP server</bug_affected>
<bug_not_affected>Other FTP servers</bug_not_affected>
<bug_vulnerability_class>Configuration</bug_vulnerability_class>
<bug_description>An attacker can determine the Corel Linux FTP server and operating system by grabbing the banner of the FTP server. This information can be used for further enumeration or generic attacks.</bug_description>
<bug_solution>The server should be deactivated or de-installed if not necessary. To make it harder to find the FTP server the daemon could be configured to listen at another port (e.g. 2221). 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_solution>
<bug_fixing_time>15 minutes</bug_fixing_time>
<bug_exploit_availability>Yes</bug_exploit_availability>
<bug_remote>Yes</bug_remote>
<bug_local>Yes</bug_local>
<bug_severity>Low</bug_severity>
<bug_popularity>8</bug_popularity>
<bug_simplicity>8</bug_simplicity>
<bug_impact>3</bug_impact>
<bug_risk>6</bug_risk>
<bug_check_tool>GFI LANguard is able to recognize the banner.</bug_check_tool>
<source_literature>Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427</source_literature>
<source_misc>http://www.computec.ch</source_misc>