Cisco Pix and ASA TTL denial of service
| pix-asa-ttl-dos (39862) |  Medium Risk |
Description:
Cisco PIX and ASA are vulnerable to a denial of service, caused by an error when the Time-to-Live (TTL) decrement feature is enabled. By sending a specially-crafted IP packet, a remote attacker could exploit this vulnerability to reload the device.
*CVSS:
| Base Score: | 7.8 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 5.8 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to cisco-sa-20080123-asa for patch, upgrade, or suggested workaround information. See References.
References:
- cisco-sa-20080123-asa: Cisco Security Advisory: Cisco PIX and ASA Time-to-Live Vulnerability.
- BID-27418: Cisco PIX and ASA Appliance 'TTL Decrement' Denial of Service Vulnerability
- CVE-2008-0028: Unspecified vulnerability in Cisco PIX 500 Series Security Appliance and 5500 Series Adaptive Security Appliance (ASA) before 7.2(3)6 and 8.0(3), when the Time-to-Live (TTL) decrement feature is enabled, allows remote attackers to cause a denial of service (device reload) via a crafted IP packet.
- SA28625: Cisco PIX and ASA Time-To-Live Denial of Service Vulnerability
- SECTRACK ID: 1019262: Cisco ASA TTL Decrement Feature Lets Remote Users Deny Service
- SECTRACK ID: 1019263: Cisco PIX Firewall TTL Decrement Feature Lets Remote Users Deny Service
- VUPEN/ADV-2008-0259: Cisco PIX and ASA Time-to-Live Remote Denial of Service Vulnerability
Platforms Affected:
- Cisco 5500 Series Adaptive Security Appliance 7.2-2
- Cisco 5500 Series Adaptive Security Appliance 8.0-2
- Cisco PIX 500 7.2.2
- Cisco PIX 500 8.0.2
Reported:
Jan 23, 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 (IBM 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.
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.