PT-2020-4162 · Cisco · Cisco Ios Xe+1

Published 2020-09-24 · Updated 2020-10-08 · CVE-2020-3512

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Cisco IOS Software and Cisco IOS XE Software (affected versions not specified)

Description: A vulnerability in the PROFINET handler for Link Layer Discovery Protocol (LLDP) messages 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.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Resource Exhaustion

Weakness Enumeration

CWE-388

CWE-400

Related Identifiers

BDU:2020-04584

CVE-2020-3512

Affected Products

Cisco Ios

Cisco Ios Xe

References · 6

• https://osv.dev/vulnerability/CVE-2020-3512 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04584 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-profinet-dos-65qYG3W5 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3512 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-profinet-dos-65qYG3W5 · Vendor Advisory