Denial of service in Cisco IOS and Cisco IOS XE - CVE-2017-3864
Published: March 23, 2017 / Updated: April 5, 2018
Vulnerability identifier: #VU6165
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-3864
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS
Cisco IOS XE
Cisco IOS
Cisco IOS XE
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS conditions on the target system.
The weakness exists due to an error when parsing malicious DHCP packet. A remote can sendspecially crafted DHCP packets and cause the affected device to reload.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to an error when parsing malicious DHCP packet. A remote can sendspecially crafted DHCP packets and cause the affected device to reload.
Successful exploitation of the vulnerability results in denial of service.
How to mitigate CVE-2017-3864
Install update from vendor's website.