Cisco VPN 3000 Concentrator HTTP packet denial of service

cisco-vpn-http-dos (24330) The risk level is classified as MediumMedium Risk

Description:

Cisco VPN 3000 series concentrator is vulnerable to a denial of service attack. If the HTTP service is enabled, which is enabled by default, a remote attacker could send specially-crafted HTTP packets to a vulnerable device to cause the device to reload and drop all existing connections, resulting in a denial of service.


Consequences:

Denial of Service

Remedy:

Refer to Cisco Security Advisory cisco-sa-20060126-vpn for upgrade or workaround information. See References.

References:

  • cisco-sa-20060126-vpn: Cisco Security Advisory: Cisco VPN 3000 Concentrator Vulnerable to Crafted HTTP Attack.
  • eSentire, Inc. Security News: eSENTIRE discovers a Cisco VPN Denial of Service (DoS).
  • VulnWatch Mailing List, Tue Jan 31 2006 - 14:18:28 CST: Re: [VulnWatch] Cisco Security Advisory: Cisco VPN 3000 Concentrator Vulnerable to Crafted HTTP Attack.
  • BID-16394: Cisco VPN 3000 Concentrator Malformed HTTP/TCP Packet Remote Denial of Service Vulnerability
  • CVE-2006-0483: Cisco VPN 3000 series concentrators running software 4.7.0 through 4.7.2.A allow remote attackers to cause a denial of service (device reload or user disconnect) via a crafted HTTP packet.
  • OSVDB ID: 22754: Cisco VPN 3000 Concentrator Crafted HTTP Packet DoS
  • SA18629: Cisco VPN 3000 Concentrator HTTP Packet Denial of Service
  • SECTRACK ID: 1015546: Cisco VPN 3000 Concentrator Bug in HTTP Service Lets Remote Users Deny Service

Platforms Affected:

  • Cisco VPN 3005 Concentrator 4.7
  • Cisco VPN 3005 Concentrator 4.7(Rel)
  • Cisco VPN 3005 Concentrator 4.7.1
  • Cisco VPN 3005 Concentrator 4.7.1.F
  • Cisco VPN 3005 Concentrator 4.7.2
  • Cisco VPN 3005 Concentrator 4.7.2 A
  • Cisco VPN 3015 Concentrator 4.7
  • Cisco VPN 3015 Concentrator 4.7(Rel)
  • Cisco VPN 3015 Concentrator 4.7.1
  • Cisco VPN 3015 Concentrator 4.7.1.F
  • Cisco VPN 3015 Concentrator 4.7.2
  • Cisco VPN 3015 Concentrator 4.7.2.A
  • Cisco VPN 3020 Concentrator 4.7
  • Cisco VPN 3020 Concentrator 4.7(Rel)
  • Cisco VPN 3020 Concentrator 4.7.1
  • Cisco VPN 3020 Concentrator 4.7.1.F
  • Cisco VPN 3020 Concentrator 4.7.2
  • Cisco VPN 3020 Concentrator 4.7.2.A
  • Cisco VPN 3030 Concentrator 4.7
  • Cisco VPN 3030 Concentrator 4.7(Rel)
  • Cisco VPN 3030 Concentrator 4.7.1
  • Cisco VPN 3030 Concentrator 4.7.1.F
  • Cisco VPN 3030 Concentrator 4.7.2
  • Cisco VPN 3030 Concentrator 4.7.2.A
  • Cisco VPN 3060 Concentrator 4.7
  • Cisco VPN 3060 Concentrator 4.7(Rel)
  • Cisco VPN 3060 Concentrator 4.7.1
  • Cisco VPN 3060 Concentrator 4.7.1.F
  • Cisco VPN 3060 Concentrator 4.7.2
  • Cisco VPN 3060 Concentrator 4.7.2.A
  • Cisco VPN 3080 Concentrator 4.7
  • Cisco VPN 3080 Concentrator 4.7(Rel)
  • Cisco VPN 3080 Concentrator 4.7.1
  • Cisco VPN 3080 Concentrator 4.7.1.F
  • Cisco VPN 3080 Concentrator 4.7.2.A

Reported:

Jan 26, 2006

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