CVE-2018-0173 · Severity: critical · CVSS 8.6 · Exploited in the wild · Published 2022-03-03
A vulnerability in Cisco IOS and IOS XE Software's DHCPv4 relay function allows an unauthenticated remote attacker to cause a denial-of-service (DoS) via a device reload. The issue stems from improper input validation of encapsulated DHCP Option 82 information in DHCPOFFER messages.
Yes. CVE-2018-0173 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2018-0173?
Critical severity, with a CVSS score of 8.6, published 3 March 2022.
Which products and versions are affected?
Cisco IOS Up to 15.2(6)e0a; Cisco IOS XE Up to 15.2(6)e0a; Cisco IOS Denali 16.3.4; Rockwell Automation Stratix 5400/5410/5700/8000/8300.
Is there a fix for CVE-2018-0173?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2018-0173 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2018-0173?
Check whether you run Cisco IOS, Cisco IOS XE, Cisco IOS XE Software or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.