CVE-2018-0158: Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.
Other sources
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.
— CISA
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Cisco IOS and IOS XE Softwareto a version that resolves this vulnerability.Patch CSCvf22394
Event History
Frequently Asked Questions
What is CVE-2018-0158?
CVE-2018-0158 is a vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software that could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device leading to a denial of service (DoS) condition.
Which software are affected by CVE-2018-0158?
Cisco IOS Software and Cisco IOS XE Software versions 15.5(3)s1.1 to 15.5(3)s1.12 are affected by CVE-2018-0158.
What is the severity of CVE-2018-0158?
CVE-2018-0158 has a severity rating of 8.6 (high).
How can an attacker exploit CVE-2018-0158?
An attacker can exploit CVE-2018-0158 by sending maliciously crafted packets to the vulnerable device, leading to a memory leak or device reload.
Are there any references for CVE-2018-0158?
Yes, you can find references for CVE-2018-0158 at the following links: Security Focus (BID 103566), Security Tracker (ID 1040595), and US-CERT Advisory (ICSA-18-107-03).