Cisco ASA 5500 and PIX 500 IKE message denial of service
| cisco-asa-ike-dos (56341) |  Medium Risk |
Description:
Cisco ASA 5500 and PIX 500 are vulnerable to a denial of service. By sending a specially-crafted IKE message on port UDP 4500 that traverses an existing IPsec tunnel, a remote attacker could exploit this vulnerability to cause all IPsec tunnels terminating on the appliance to be torn down and prevent new tunnels from being established.
*CVSS:
| Base Score: | 5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 4.1 |
| Exploitability: | Functional |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to cisco-sa-20100217-asa for patch, upgrade or suggested workaround information. See References.
References:
- cisco-sa-20100217-asa: Multiple Vulnerabilities in Cisco ASA 5500 Series Adaptive Security Appliances.
- BID-38279: Cisco ASA 5500 IKE Message Denial of Service Vulnerability
- CVE-2010-0567: Unspecified vulnerability in Cisco ASA 5500 Series Adaptive Security Appliance 7.0 before 7.0(8.10), 7.2 before 7.2(4.45), 8.0 before 8.0(5.1), 8.1 before 8.1(2.37), and 8.2 before 8.2(1.15); and Cisco PIX 500 Series Security Appliance; allows remote attackers to cause a denial of service (active IPsec tunnel loss and prevention of new tunnels) via a malformed IKE message through an existing tunnel to UDP port 4500, aka Bug ID CSCtc47782.
- OSVDB ID: 62436: Cisco Multiple Products Malformed IKE Message Handling Remote DoS
- SA38618: Cisco ASA 5500 Series Multiple Vulnerabilities
- SA38636: Cisco PIX 500 Series Multiple Vulnerabilities
- SECTRACK ID: 1023612: Cisco ASA TCP, SIP, SCCP, DTLS, and IKE Processing Flaws Let Remote Users Deny Service
- VUPEN/ADV-2010-0415: Cisco ASA 5500 Authentication Bypass and Denial of Service Issues
Platforms Affected:
- Cisco ASA 5500 7.2
- Cisco ASA 5500 8.0
- Cisco ASA 5500 8.1
- Cisco ASA 5500 8.2
- Cisco PIX 500
Reported:
Feb 17, 2010
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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.