Type packetstorm
Reporter Josh Zlatin
Modified 2005-11-30T00:00:00


                                            `Synopsis: MailEnable Imap Remote DOS.  
Product: MailEnable Pro  
MailEnable Enterprise  
Version: Confirmed on MailEnable Pro 1.7 and MailEnable Enterprise 1.1  
Author: Josh Zlatin-Amishav  
Date: November 24, 2005  
MailEnable's mail server software provides a powerful, scalable hosted   
messaging platform for Microsoft Windows. MailEnable offers stability,   
unsurpassed flexibility and an extensive feature set which allows you to   
provide cost-effective mail services.  
In working with researchers at Tenable Network Security, I have come across  
a Denial of Service attack in the MailEnable Pro and MailEnable Enterprise  
IMAP server. It is possible to remotely crash the IMAP server by sending a   
rename request with non existant mailbox names  
telnet localhost 143  
a1 login josh byebye  
a2 rename foo bar  
where josh and byebye are the login credentials for an existing mailbox.  
Vendor notified: November 24, 2005 10:50AM  
Patch released: November 24, 2005 13:28PM  
Download patch from:  
To install:  
1) Stop the IMAP service  
2) Rename the MEIMAPS.EXE file in the Mail Enable\bin directory as this will  
allow you to roll back this fix  
3) Extract the zip file from the URL above to the Mail Enable\bin directory  
4) Start the IMAP service