RealServer pnserver malformed request denial of service
| realserver-pnserver-remote-dos (7297) |  Medium Risk |
Description:
RealNetworks RealServer is vulnerable to a denial of service attack. If a remote attacker connects to the pnserver using Telnet and sends short specially-malformed requests, the attacker can cause the server to crash. The server must be restarted to regain normal functionality.
Platforms Affected:
- Real, RealServer 5.0
Remedy:
Apply the RealServer 5.01 update for your system, as listed in RealServer 5.0 Frequently Asked Questions. See References.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, 17 Aug 1998 15:03:10, Re: Real Audio Server Version 5 bug? at http://archives.neohapsis.com/archives/bugtraq/1998_3/0569.html.
- BugTraq Mailing List, Thu, 15 Jan 1998 21:22:43 -0600, pnserver exploit.. at http://archives.neohapsis.com/archives/bugtraq/1998_1/0083.html.
- Real.com Support, RealServer 5.0 Frequently Asked Questions at http://service.real.com/help/faq/serv501.html.
- CVE-1999-1045: pnserver in RealServer 5.0 and earlier allows remote attackers to cause a denial of service by sending a short, malformed request.
- OSVDB ID: 6979: RealServer pnserver Malformed Request DoS
Reported:
Jan 15, 1998
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