NVD

CVE-2020-3120 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

A vulnerability in the Cisco Discovery Protocol implementation for Cisco FXOS Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a missing check when the affected software processes Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to exhaust system memory, causing the device to reload. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 6.5 MEDIUM

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 7.4 HIGH

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 6.1 MEDIUM

Vector: (AV:A/AC:L/Au:N/C:N/I:N/A:C)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html	Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html	Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	NIST Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

7 change records found show changes

Initial Analysis by NIST 2/11/2020 10:06:34 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CVSS V2		NIST (AV:A/AC:L/Au:N/C:N/I:N/A:C)
Added	CWE		NIST CWE-190
Added	CPE Configuration		Record truncated, showing 500 of 535 characters. View Entire Change Record AND OR cpe:2.3:a:cisco:ucs_manager::::::::* versions up to (excluding) 3.2\(3m\) cpe:2.3:a:cisco:ucs_manager::::::::* versions from (including) 4.0 up to (excluding) 4.0\(4g\) OR cpe:2.3:h:cisco:ucs_6248up:-:::::::* cpe:2.3:h:cisco:ucs_6296up:-:::::::* cpe:2.3:h:cisco:ucs_6300:-:::::::* cpe:2.3:h:cisco:ucs_6324:-:::::::* cpe:2.3:h:cisco:ucs_64108:-:::::::* cpe:2
Added	CPE Configuration		Record truncated, showing 500 of 822 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:fxos::::::::* versions up to (including) 2.3.1.173 cpe:2.3:o:cisco:fxos:2.4::::::: cpe:2.3:o:cisco:fxos::::::::* versions from (including) 2.6 up to (excluding) 2.6.1.187 cpe:2.3:o:cisco:fxos::::::::* versions from (including) 2.7 up to (excluding) 2.7.1.106 OR cpe:2.3:h:cisco:firepower_4110:-:::::::* cpe:2.3:h:cisco:firepower_4115:-:::::::* cpe:2.3:h
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:ios_xr:5.2.5::::::: OR cpe:2.3:h:cisco:ncs_6000:-:::::::*
Added	CPE Configuration		Record truncated, showing 500 of 630 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:ios_xr:6.4.2::::::: OR cpe:2.3:h:cisco:asr_9000v:-:::::::* cpe:2.3:h:cisco:asr_9001:-:::::::* cpe:2.3:h:cisco:asr_9006:-:::::::* cpe:2.3:h:cisco:asr_9010:-:::::::* cpe:2.3:h:cisco:asr_9901:-:::::::* cpe:2.3:h:cisco:asr_9904:-:::::::* cpe:2.3:h:cisco:asr_9906:-:::::::* cpe:2.3:h:cisco:asr_9910:-:::::::* cpe:2.3
Added	CPE Configuration		Record truncated, showing 500 of 1833 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:ios_xr:6.5.3::::::: OR cpe:2.3:h:cisco:asr_9000v:-:::::::* cpe:2.3:h:cisco:asr_9001:-:::::::* cpe:2.3:h:cisco:asr_9006:-:::::::* cpe:2.3:h:cisco:asr_9010:-:::::::* cpe:2.3:h:cisco:asr_9901:-:::::::* cpe:2.3:h:cisco:asr_9904:-:::::::* cpe:2.3:h:cisco:asr_9906:-:::::::* cpe:2.3:h:cisco:asr_9910:-:::::::* cpe:2.3
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:ios_xr:6.6.25::::::: OR cpe:2.3:h:cisco:ncs_560:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:ios_xr:7.0.1::::::: OR cpe:2.3:h:cisco:ncs_540l:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 5.2 up to (excluding) 5.2\(1\)sv5\(1.3\) OR cpe:2.3:h:cisco:nexus_1000ve:-:::::vsphere::
Added	CPE Configuration		Record truncated, showing 500 of 902 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 5.2 up to (excluding) 6.2\(29\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.3 up to (excluding) 8.4\(1a\) OR cpe:2.3:h:cisco:mds_9132t:-:::::::* cpe:2.3:h:cisco:mds_9148s:-:::::::* cpe:2.3:h:cisco:mds_9148t:-:::::::* cpe:2.3:h:cisco:mds_9216:-:::::::* cpe:2.3:h:cisco:mds_9216a:-:::::::*
Added	CPE Configuration		Record truncated, showing 500 of 3840 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.0\(3\)f2 up to (excluding) 9.3\(2\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.0\(3\)i up to (excluding) 7.0\(3\)i7\(8\) OR cpe:2.3:h:cisco:nexus_3016:-:::::::* cpe:2.3:h:cisco:nexus_3048:-:::::::* cpe:2.3:h:cisco:nexus_3064:-:::::::* cpe:2.3:h:cisco:nexus_3064-t:-:::::::* cpe:2.3:h:cisco:nexus_31
Added	CPE Configuration		Record truncated, showing 500 of 2030 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 13.2\(9b\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 14.0 up to (excluding) 14.2\(1j\) OR cpe:2.3:h:cisco:nexus_9000v:-:::::::* cpe:2.3:h:cisco:nexus_92160yc-x:-:::::::* cpe:2.3:h:cisco:nexus_92300yc:-:::::::* cpe:2.3:h:cisco:nexus_92304qc:-:::::::* cpe:2.3:h:cisco:nexus_92348gc-x:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 5.2\(1\)sv3\(4.1b\) OR cpe:2.3:h:cisco:nexus_1000v:-:::::vsphere::
Added	CPE Configuration		Record truncated, showing 500 of 536 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 6.2\(24\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.2 up to (excluding) 7.3\(5\)d1\(1\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 8.0 up to (excluding) 8.2\(5\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 8.3 up to (excluding) 8.4\(2\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.
Added	CPE Configuration		Record truncated, showing 500 of 601 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 7.3\(6\)n1\(1\) OR cpe:2.3:h:cisco:nexus_5548p:-:::::::* cpe:2.3:h:cisco:nexus_5548up:-:::::::* cpe:2.3:h:cisco:nexus_5596t:-:::::::* cpe:2.3:h:cisco:nexus_5596up:-:::::::* cpe:2.3:h:cisco:nexus_56128p:-:::::::* cpe:2.3:h:cisco:nexus_5624q:-:::::::* cpe:2.3:h:cisco:nexus_5648q:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (including) 5.2 OR cpe:2.3:h:cisco:nexus_1000v:-:::::hyper-v::
Changed	Reference Type	http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html No Types Assigned	http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html Third Party Advisory, VDB Entry
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-fxnxos-iosxr-cdp-dos Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2020-3120
NVD Published Date:
02/05/2020
NVD Last Modified:
11/21/2024
Source:
Cisco Systems, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2020-3120 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CVE 11/21/2024 12:30:22 AM

CVE Modified by Cisco Systems, Inc. 5/14/2024 3:08:57 AM

CPE Deprecation Remap by NIST 4/20/2023 11:27:48 AM

CPE Deprecation Remap by NIST 4/20/2023 11:27:48 AM

CPE Deprecation Remap by NIST 4/20/2023 11:27:48 AM

Initial Analysis by NIST 2/11/2020 10:06:34 AM

CVE Modified by Cisco Systems, Inc. 2/05/2020 2:15:11 PM

Quick Info