#VU47110 Input validation error in Cisco IOS and Cisco IOS XE - CVE-2020-3512
Published: September 24, 2020 / Updated: September 25, 2020
Vulnerability identifier: #VU47110
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/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-2020-3512
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Cisco IOS
Cisco IOS XE
Cisco IOS
Cisco IOS XE
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of LLDP messages in the PROFINET LLDP message handler in Cisco IOS and IOS XE. A remote attacker on the local network can send a malicious LLDP message to an affected device and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.