EServ passive mode denial of service
| eserv-pasv-dos (8020) |  Medium Risk |
Description:
EServ is vulnerable to a denial of service attack. A remote attacker can send a large number of PASV commands to the FTP server to cause the server to stop accepting passive mode commands.
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of EServ (2.98-beta or later), available from the EServ FTP site. See References.
References:
- BugTraq Mailing List, Tue Jan 29 2002 - 15:33:00 CST: Vulnerabilities in EServ 2.97.
- EServ FTP site: /pub/beta/2.98/.
- EServ Web site: EServ.
- BID-3983: Etype EServ Passive Mode Denial of Service Vulnerability
- CVE-2002-0221: Etype Eserv 2.97 allows remote attackers to cause a denial of service (resource exhaustion) via a large number of PASV commands that consume ports 1024 through 5000, which prevents the server from accepting valid PASV.
- OSVDB ID: 12081: Etype Eserv PASV Command Saturation DoS
Platforms Affected:
- Etype Company EServ 2.97
Reported:
Jan 29, 2002
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