CVE-2018-0159

Known Exploited

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 6.18% Top 10%
KEV Since 
Vendor Advisory cisco.com
Affected: n/a Cisco IOS and IOS XE
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/103562 broken link third party advisory vdb entry
http://www.securitytracker.com/id/1040595 broken link third party advisory vdb entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike-dos vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-0159?
CVE-2018-0159 has been scored as a high severity vulnerability.
How to fix CVE-2018-0159?
To fix CVE-2018-0159, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0159 being actively exploited in the wild?
It is confirmed that CVE-2018-0159 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0159?
CVE-2018-0159 affects n/a Cisco IOS and IOS XE.
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