Cisco IOS Intrusion Prevention System denial of service
Cisco IOS is vulnerable to a denial of service, caused by an error in the Intrusion Prevention System implementation. By sending a specially-crafted DNS packet, a remote attacker could exploit this vulnerability to cause the device to reload.
|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
Denial of Service
Refer to cisco-sa-20120926-ios-ips for patch, upgrade or suggested workaround information. See References.
- cisco-sa-20120926-ios-ips: Cisco IOS Software Intrusion Prevention System Denial of Service Vulnerability.
Cisco IOS CVE-2012-3950 Remote Denial of Service Vulnerability
The Intrusion Prevention System (IPS) feature in Cisco IOS 12.3 through 12.4 and 15.0 through 15.2, in certain configurations of enabled categories and missing signatures, allows remote attackers to cause a denial of service (device reload) via DNS packets, aka Bug ID CSCtw55976.
- OSVDB ID: 85815:
Cisco IOS Intrusion Prevention System Malformed DNS Packet Parsing Remote DoS
Cisco IOS Intrusion Prevention System DNS Packet Handling Denial of Service Vulnerability
- Cisco IOS 12.4
- Cisco IOS 15.0
- Cisco IOS 15.1
- Cisco IOS 15.2
Sep 26, 2012
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