Cisco IOS and CatOS VLAN Trunking Protocol (VTP) denial of service
| cisco-ios-catos-vtp-dos (46346) |  Low Risk |
Description:
Multiple Cisco devices running IOS and CatOS are vulnerable to a denial of service, caused by an error when VTP server or client operating mode is enabled. By sending a specially-crafted VLAN Trunking Protocol (VTP) packet, a remote attacker could exploit this vulnerability to cause the device to hang.
Platforms Affected:
- Cisco, CatOS
- Cisco, IOS
Remedy:
Refer to cisco-sr-20081105-vtp for suggested workaround information. See References.
Consequences:
Denial of Service
References:
- cisco-sr-20081105-vtp, Cisco Security Response: Cisco VLAN Trunking Protocol Vulnerability at http://www.cisco.com/warp/public/707/cisco-sr-20081105-vtp.shtml.
- BID-32120: Cisco IOS and CatOS VLAN Trunking Protocol Packet Handling Denial Of Service Vulnerability
- CVE-2008-4963: Unspecified vulnerability in the VLAN Trunking Protocol (VTP) implementation on Cisco IOS and CatOS, when the VTP operating mode is not transparent, allows remote attackers to cause a denial of service (device reload or hang) via a crafted VTP packet sent to a switch interface configured as a trunk port.
- SA32573: Cisco IOS / CatOS VLAN Trunking Protocol Vulnerability
- SECTRACK ID: 1021143: Cisco CatOS VLAN Trunking Protocol Bug Lets Remote Users on the Local Network Deny Service
- SECTRACK ID: 1021144: Cisco IOS VLAN Trunking Protocol Bug Lets Remote Users on the Local Network Deny Service
Reported:
Nov 05, 2008
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