OpenBSD ISAKMP memory leak

openbsd-isakmp-memory-leak (15519) The risk level is classified as LowLow Risk


Internet Security Association and Key Management Protocol (ISAKMP), when running on OpenBSD, is vulnerable to a denial of service, caused by memory leaks. A remote attacker could send a specially-crafted ISAKMP packet to cause a denial of service.


Denial of Service


For OpenBSD 3.4:
Apply the 015_isakmpd2.patch, available from the OpenBSD 3.4 errata Web site. See References.

For OpenBSD 3.3:
Apply the 020_isakmpd2.patch, available from the OpenBSD 3.4 errata Web site. See References.


  • OpenBSD 3.3 errata Web site: 015: SECURITY FIX: February 5, 2004.
  • OpenBSD 3.4 errata Web site: 015: RELIABILITY FIX: March 17, 2004.
  • Rapid7, Inc. Security Advisory R7-0018: OpenBSD isakmpd payload handling denial-of-service vulnerabilities.
  • BID-10028: OpenBSD ISAKMPD Zero Payload Length Denial Of Service Vulnerability
  • BID-1003: FTPx FTP Explorer Weak Password Encryption Vulnerability
  • BID-10032: OpenBSD ISAKMPD Memory Leak Denial Of Service Vulnerability
  • BID-10033: HAHTsite Scenario Server Project File Name Buffer Overrun Vulnerability
  • BID-10036: Macromedia Dreamweaver Remote User Database Access Vulnerability
  • BID-9907: OpenBSD isakmpd Multiple Unspecified Remote Denial Of Service Vulnerabilities
  • CVE-2004-0222: Multiple memory leaks in isakmpd in OpenBSD 3.4 and earlier allow remote attackers to cause a denial of service (memory exhaustion) via certain ISAKMP packets, as demonstrated by the Striker ISAKMP Protocol Test Suite.
  • OSVDB ID: 5701: OpenBSD isakmpd Various Memory Leaks DoS
  • SECTRACK ID: 1009468: isakmpd Payload Handling Flaw Lets Remote Users Crash the Daemon
  • US-CERT VU#996177: Multiple memory leak vulnerabilities in isakmpd

Platforms Affected:

  • OpenBSD OpenBSD 3.3
  • OpenBSD OpenBSD 3.4


Mar 17, 2004

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