Multiple Cisco Catalyst devices Supervisor Engine and Route Switch Processor modules denial of service

cisco-catalyst-sup-rsp-dos (41466) The risk level is classified as LowLow Risk

Description:

Multiple Cisco Catalyst devices using Supervisor Engine 32, Supervisor Engine 720, or Route Switch Processor 720 modules are vulnerable to a denial of service, caused by an error when OSPF sham-link and MPLS VPN are enabled on certain versions of IOS 12.2. By sending certain packets to an affected device, a remote attacker could block the input queue, create memory leaks, or cause the device to reload.

Platforms Affected:

  • Cisco, Catalyst 6500
  • Cisco, Catalyst 7600
  • Cisco, IOS 12.2IXA
  • Cisco, IOS 12.2IXB
  • Cisco, IOS 12.2IXC
  • Cisco, IOS 12.2IXD
  • Cisco, IOS 12.2IXE
  • Cisco, IOS 12.2SXA
  • Cisco, IOS 12.2SXB
  • Cisco, IOS 12.2SXD
  • Cisco, IOS 12.2SXE
  • Cisco, IOS 12.2ZU
  • Cisco, ME 6524 Ethernet Switch

Remedy:

Refer to cisco-sa-20080326-queue for patch, upgrade or suggested workaround information. See References.

Consequences:

Denial of Service

References:

  • cisco-sa-20080326-queue, Cisco Security Advisory: Vulnerability in Cisco IOS with OSPF, MPLS VPN, and Supervisor 32, Supervisor 720, or Route Switch Processor 720 at http://www.cisco.com/warp/public/707/cisco-sa-20080326-queue.shtml.
  • BID-28463: Cisco IOS With OSPF, MPLS VPN, Sup32, Sup720 or RSP720 Denial of Service Vulnerability
  • CVE-2008-0537: Unspecified vulnerability in the Supervisor Engine 32 (Sup32), Supervisor Engine 720 (Sup720), and Route Switch Processor 720 (RSP720) for multiple Cisco products, when using Multi Protocol Label Switching (MPLS) VPN and OSPF sham-link, allows remote attackers to cause a denial of service (blocked queue, device restart, or memory leak) via unknown vectors.
  • FrSIRT/ADV-2008-1005: Cisco IOS Packets Processing Remote Denial of Service Vulnerability
  • SA29559: Cisco IOS Denial of Service Vulnerability
  • SECTRACK ID: 1019716: Cisco IOS OSPF/MPLS VPN Bug Lets Remote Users Deny Service

Reported:

Mar 26, 2008

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.

For corrections or additions please email xforce@iss.net

Return to the main page