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HIGH · 7.4

CVE-2020-3512

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 c...

Vulnerability 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.

CVSS Score

7.4

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoIos Xe15.2\(7\)e
CiscoCatalyst 3650-12X48Uq-
CiscoCatalyst 3650-12X48Ur-
CiscoCatalyst 3650-12X48Uz-
CiscoCatalyst 3650-24Pd-
CiscoCatalyst 3650-24Pdm-
CiscoCatalyst 3650-48Fqm-
CiscoCatalyst 3650-8X24Uq-
CiscoCatalyst 3850-24Xs-
CiscoCatalyst 3850-48Xs-
CiscoCatalyst 3850-Nm-2-40G-
CiscoCatalyst 3850-Nm-8-10G-
CiscoCatalyst C9200-24P-
CiscoCatalyst C9200-24T-
CiscoCatalyst C9200-48P-
CiscoCatalyst C9200-48T-
CiscoCatalyst C9200L-24P-4G-
CiscoCatalyst C9200L-24P-4X-
CiscoCatalyst C9200L-24Pxg-2Y-
CiscoCatalyst C9200L-24Pxg-4X-

Related Weaknesses (CWE)

CWE-400CWE-388

References

FAQ

What is CVE-2020-3512?

CVE-2020-3512 is a vulnerability with a CVSS score of 7.4 (HIGH). 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 c...

How severe is CVE-2020-3512?

CVE-2020-3512 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-3512?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 3650-12X48Uq, Cisco Catalyst 3650-12X48Ur, Cisco Catalyst 3650-12X48Uz, Cisco Catalyst 3650-24Pd.