Description
The SMTP service of MailEnable Standard 1.92 and earlier, Professional 2.0 and earlier, and Enterprise 2.0 and earlier before the MESMTPC hotfix, allows remote attackers to cause a denial of service (application crash) via a HELO command with a null byte in the argument, possibly triggering a length inconsistency or a missing argument.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- MailEnable 1.x - SMTP 'HELO' Remote Denial of Service EDB-28103 · dos · Jun 24, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- http://www.mailenable.com/hotfix/mesmtpc.zip
- mailenable-smtp-helo-dos(27387) vdb-entry
- 1016376 vdb-entry
- ADV-2006-2520 vdb-entry
- 20790 third-party-advisory
- 26791 vdb-entry
- http://www.divisionbyzero.be/?p=174
- 18630 vdb-entry
- http://www.divisionbyzero.be/?p=173
- 20060624 Mailenable SMTP Service DoS mailing-list