CVE-2018-0174 · Severity: critical · CVSS 8.6 · Exploited in the wild · Published 2022-03-03
A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS and IOS XE Software allows an unauthenticated, remote attacker to cause a denial of service (DoS) via a device reload. The issue stems from incomplete input validation of option 82 information received in DHCPv4 packets from relay agents.
Yes. CVE-2018-0174 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2018-0174?
Critical severity, with a CVSS score of 8.6, published 3 March 2022.
Which products and versions are affected?
Cisco IOS Software up to (including) 15.2(6)e0a; Cisco IOS XE Software up to (including) 15.2(6)e0a; Rockwell Automation Allen-Bradley Stratix 5400/5410/5700/8000/8300.
Is there a fix for CVE-2018-0174?
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-2018-0174 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2018-0174?
Check whether you run Cisco IOS XE or Cisco IOS XE Software. 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.
Affected products
Cisco IOS Software up to (including) 15.2(6)e0a
Cisco IOS XE Software up to (including) 15.2(6)e0a