CVE-2018-0172 · 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 heap overflow. This occurs due to incomplete input validation of option 82 information in DHCPv4 packets, potentially leading to a device reload and denial-of-service (DoS) condition.
Yes. CVE-2018-0172 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2018-0172?
Critical severity, with a CVSS score of 8.6, published 3 March 2022.
Which products and versions are affected?
Cisco IOS Software; Cisco IOS XE Software; Rockwell Automation Allen-Bradley ArmorStratix 5700; Rockwell Automation Allen-Bradley Stratix 5400; and 4 more.
Is there a fix for CVE-2018-0172?
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-2018-0172 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2018-0172?
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.