CVE-2020-3512

high

Description

A vulnerability in the PROFINET handler for Link Layer Discovery Protocol (LLDP) messages of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a crash on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of LLDP messages in the PROFINET LLDP message handler. An attacker could exploit this vulnerability by sending a malicious LLDP message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-profinet-dos-65qYG3W5

Details

Source: Mitre, NVD

Published: 2020-09-24

Updated: 2020-10-08

Risk Information

CVSS v2

Base Score: 5.7

Vector: CVSS2#AV:A/AC:M/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.4

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Severity: High