Cisco IOS and CatOS VLAN Trunking Protocol (VTP) denial of service
| cisco-ios-catos-vtp-dos (46346) |  Medium 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.
*CVSS:
| Base Score: | 5.7 |
| Access Vector: | Adjacent Network |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 5.1 |
| Exploitability: | Functional |
| Remediation Level: | Workaround |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to cisco-sr-20081105-vtp for suggested workaround information. See References.
References:
- cisco-sr-20081105-vtp: Cisco Security Response: Cisco VLAN Trunking Protocol Vulnerability.
- 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.
- OSVDB ID: 49601: Cisco IOS / CatOS Crafted VTP Packet Handling DoS
- 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
Platforms Affected:
- Cisco CatOS
- Cisco IOS
Reported:
Nov 05, 2008
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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.