Plugin ID | 223 |
Plugin name | MailEnable SMTP Connector Service 1.x DNS Lookup denial of service |
Plugin filename | MailEnable SMTP Connector Service 1.x DNS Lookup denial of service.plugin |
Plugin filesize | 3652 bytes |
Plugin family | SMTP |
Plugin created name | Marc Ruef |
Plugin created email | marc dot ruef at computec dot ch |
Plugin created web | http://www.computec.ch |
Plugin created company | computec.ch |
Plugin created date | 2004/09/14 |
Plugin updated name | Marc Ruef |
Plugin updated email | marc dot ruef at computec dot ch |
Plugin updated web | http://www.computec.ch |
Plugin updated company | computec.ch |
Plugin updated date | 2004/11/13 |
Plugin version | 1.1 |
Plugin changelog | Corrected the plugin structure and added the accuracy values in 1.1 |
Plugin protocol | tcp |
Plugin port | 25 |
Plugin procedure detection | open|sleep|close|pattern_exists 220 *Enable*1.[0-6]* OR 220 *Enable*1.7.[0-1]* OR 220 *Enable*0.#* OR 220 *Enable*1.[0-2]* |
Plugin detection accuracy | 80 |
Plugin comment | This ATK plugin is inspired by the Nessus plugin. The Standard Edition seems to format version as "1.71--" (for 1.71) while Professional Edition formats it like "0-1.2-" (for 1.2). |
Bug published email | info at mailenable dot com |
Bug published web | http://www.mailenable.com |
Bug published company | MailEnable |
Bug published date | 2004/11/09 |
Bug advisory | http://www.mailenable.com/hotfix/ |
Bug affected | MailEnable SMTP Connector Service 1.x |
Bug not affected | Fixed MailEnable SMTP Connector Service 1.x or other solutions |
Bug vulnerability class | Denial Of Service |
Bug description | The target system is running MailEnable SMTP Connector Service 1.x. There is a denial of service vulnerability in the DNS Lookup. An attacker is able to crash the service if more than 100 requests for MX records are sent. |
Bug solution | Apply the DNS Lookup hotfix from http://www.mailenable.com/hotfix/ or upgrade the software to the latest release. To make it harder to find the server the daemon could be configured to listen at another port (e.g. 8025). 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 time | Approx. 30 minutes |
Bug exploit availability | Yes |
Bug exploit url | http://www.securityfocus.com/bid/5261/exploit/ |
Bug remote | Yes |
Bug local | No |
Bug severity | Medium |
Bug popularity | 3 |
Bug simplicity | 6 |
Bug impact | 8 |
Bug risk | 5 |
Bug Nessus risk | Low |
Bug check tools | Nessus is able to do the same check, |
Source SecurityFocus BID | 11144 |
Source OSVDB ID | 9789 |
Source Nessus ID | 14712 |
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 Misc. | http://www.mailenable.com |