CVE-2018-0159
Description
A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of specific IKEv1 packets. An attacker could exploit this vulnerability by sending crafted IKEv1 packets to an affected device during an IKE negotiation. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuj73916.
How to fix
Apply updates per vendor instructions.
CISA due date: Mar 17, 2022Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios | 15.3\(3\)s | — |
| cisco ios_xe | 15.3\(3\)s | — |
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