Cisco IOS IPS ATOMIC.TCP denial of service
| cisco-ios-ips-dos (32474) |  Medium Risk |
Description:
Cisco IOS is vulnerable to a denial of service, caused by a vulnerability in the Intrusion Prevention System (IPS) feature set. If the ATOMIC.TCP signature engine is enabled, a remote attacker could send specially-crafted packets to cause the device to crash.
*CVSS:
| Base Score: | 3.3 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 2.4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Refer to cisco-sa-20070213-iosips for upgrade or suggested workaround information. See References.
References:
- cisco-sa-20070213-iosips: Cisco Security Advisory: Multiple IOS IPS Vulnerabilities.
- BID-22549: Cisco IOS Intrusion Prevention System Multiple Vulnerabilities
- CVE-2007-0918: The ATOMIC.TCP signature engine in the Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XA, 12.3YA, 12.3T, and other trains allows remote attackers to cause a denial of service (IPS crash and traffic loss) via unspecified manipulations that are not properly handled by the regular expression feature, as demonstrated using the 3123.0 (Netbus Pro Traffic) signature.
- SA24142: Cisco IOS IPS Security Bypass and Denial of Service
- SECTRACK ID: 1017631: Cisco IOS IPS Feature Set Lets Remote Users Deny Service or Evade Intrusion Detection
- VUPEN/ADV-2007-0597: Cisco IOS Intrusion Prevention System Denial of Service and Security Bypass Issues
Platforms Affected:
- Cisco IOS 12.3
- Cisco IOS 12.3T
- Cisco IOS 12.3XQ
- Cisco IOS 12.3XR
- Cisco IOS 12.3XS
- Cisco IOS 12.3XW
- Cisco IOS 12.3XX
- Cisco IOS 12.3XY
- Cisco IOS 12.3YA
- Cisco IOS 12.3YD
- Cisco IOS 12.3YG
- Cisco IOS 12.3YH
- Cisco IOS 12.3YI
- Cisco IOS 12.3YJ
- Cisco IOS 12.3YK
- Cisco IOS 12.3YM
- Cisco IOS 12.3YQ
- Cisco IOS 12.3YS
- Cisco IOS 12.3YT
- Cisco IOS 12.3YX
- Cisco IOS 12.3YZ
- Cisco IOS 12.4MR
- Cisco IOS 12.4T
- Cisco IOS 12.4XA
- Cisco IOS 12.4XB
Reported:
Feb 13, 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.