Cisco Catalyst MPLS packet denial of service
| cisco-catalyst-mpls-dos (32748) |  Medium Risk |
Description:
Cisco Catalyst 6000, 6500, and 7600 series switches running in Hybrid Mode or with Cisco IOS Software Modularity are vulnerable to a denial of service caused by improper handling of Multi Protocol Label Switching (MPLS) packets. A remote attacker with access to the local network segment could exploit this vulnerability by sending specially-crafted MPLS packets to cause the device to reset, resulting in a denial of service.
*CVSS:
| Base Score: | 3 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 2.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to cisco-sa-20070228-mpls for patch, upgrade, or suggested workaround information. See References.
References:
- cisco-sa-20070228-mpls: Cisco Security Advisory: Cisco Catalyst 6000, 6500 and Cisco 7600 Series MPLS Packet Vulnerability.
- BID-22750: Cisco Catalyst MPLS Packet Handling Denial of Service Vulnerability
- CVE-2007-1258: Unspecified vulnerability in Cisco IOS 12.2SXA, SXB, SXD, and SXF; and the MSFC2, MSFC2a and MSFC3 running in Hybrid Mode on Cisco Catalyst 6000, 6500 and Cisco 7600 series systems; allows remote attackers on a local network segment to cause a denial of service (software reload) via a certain MPLS packet.
- SA24348: Cisco Products MPLS Denial of Service Vulnerability
- SECTRACK ID: 1017709: Cisco Catalyst 6000 and 6500 and Cisco 7600 MPLS Bug Lets Remote Users Deny Service
- VUPEN/ADV-2007-0782: Cisco Catalyst Multi Protocol Label Switching Packets Denial of Service Vulnerability
Platforms Affected:
- Cisco Catalyst 6000
- Cisco Catalyst 6500
- Cisco Catalyst 7600
- Cisco IOS 12.2SXA
- Cisco IOS 12.2SXB
- Cisco IOS 12.2SXD
- Cisco IOS 12.2SXF
Reported:
Feb 28, 2007
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For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.