CVE-2017-3864
moderate-risk
Published 2017-03-22
A vulnerability in the DHCP client implementation of Cisco IOS (12.2, 12.4, and 15.0 through 15.6) and Cisco IOS XE (3.3 through 3.7) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability occurs during the parsing of a crafted DHCP packet. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that is configured as a DHCP client. A successful exploit could allow the attacker to cause a reload of an affected device, resulting in a DoS condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or IOS XE Software and using a specific DHCP client configuration. Cisco Bug IDs: CSCuu43892.
Do I need to act?
~
1.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10
High
NETWORK
/ LOW complexity
Affected Vendors
References (6)
Third Party Advisory
http://www.securityfocus.com/bid/97012
Third Party Advisory
http://www.securitytracker.com/id/1038103
Third Party Advisory
http://www.securityfocus.com/bid/97012
Third Party Advisory
http://www.securitytracker.com/id/1038103
42
/ 100
moderate-risk
Severity
29/34 · Critical
Exploitability
3/34 · Minimal
Exposure
10/34 · Low