Cisco IOS Firewall Feature set, aka Context Based Access Control (CBAC) or Cisco Secure Integrated Software, for IOS 11.2P through 12.2T does not properly check the IP protocol type, which could allow remote attackers to bypass access control lists.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 11.2p (including) | 11.2p (including) |
| Ios | Cisco | 11.3t (including) | 11.3t (including) |
| Ios | Cisco | 12.0 (including) | 12.0 (including) |
| Ios | Cisco | 12.0t (including) | 12.0t (including) |
| Ios | Cisco | 12.1 (including) | 12.1 (including) |
| Ios | Cisco | 12.1e (including) | 12.1e (including) |
| Ios | Cisco | 12.1t (including) | 12.1t (including) |
| Ios | Cisco | 12.2 (including) | 12.2 (including) |
| Ios | Cisco | 12.2t (including) | 12.2t (including) |
References
- http://www.cisco.com/warp/public/707/IOS-cbac-dynacl-pub.shtml
- http://www.kb.cert.org/vuls/id/362483
- http://www.osvdb.org/808
- http://www.securityfocus.com/bid/3588
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7614
- http://www.cisco.com/warp/public/707/IOS-cbac-dynacl-pub.shtml
- http://www.kb.cert.org/vuls/id/362483
- http://www.osvdb.org/808
- http://www.securityfocus.com/bid/3588
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7614