CVE-2018-0174
high-risk
Published 2018-03-28
A vulnerability in the DHCP option 82 encapsulation functionality of 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 exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuh91645.
Do I need to act?
~
5.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10
High
NETWORK
/ LOW complexity
Affected Vendors
References (13)
Broken Link
http://www.securityfocus.com/bid/103554
Broken Link
http://www.securitytracker.com/id/1040591
Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
Third Party Advisory
https://www.tenable.com/security/research/tra-2018-06
Broken Link
http://www.securityfocus.com/bid/103554
Broken Link
http://www.securitytracker.com/id/1040591
Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
Third Party Advisory
https://www.tenable.com/security/research/tra-2018-06
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-...
54
/ 100
high-risk
Severity
29/34 · Critical
Exploitability
15/34 · Moderate
Exposure
10/34 · Low