NVD

CVE-2020-3517 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 Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory. The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result in a DoS condition.

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: 8.6 HIGH

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

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 8.6 HIGH

Vector: CVSS:3.0/AV:N/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: 7.8 HIGH

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

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-cfs-dos-dAmnymbd	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-cfs-dos-dAmnymbd	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	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

8 change records found show changes

Reanalysis by NIST 8/02/2022 12:23:17 PM

Action

Type

Old Value

New Value

Changed

CPE Configuration

Record truncated, showing 500 of 651 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 3.2 up to (excluding) 3.2\(3o\)
          *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (excluding) 4.0\(4i\)
          *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 4.1 up to (excluding) 4.1\(1c\)
     OR
          cpe:2.3:h:cisco:ucs_6248up:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ucs_6296up:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:ucs_6300:-:*:*:*:*:*:*:*

Record truncated, showing 500 of 630 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions up to (excluding) 3.2\(3o\)
          *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (excluding) 4.0\(4i\)
          *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 4.1 up to (excluding) 4.1\(1c\)
     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:cis

Changed

CPE Configuration

Record truncated, showing 500 of 4562 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*
     OR
          cpe:2.3:h:cisco:mds_9100:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:mds_9200:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:mds_9500:-:*:*:*:*:*:*:*
          cpe:2.3:h:cisco:mds_9700:-:*:*:*:*:*:*:*
          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

Record truncated, showing 500 of 22071 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a3\(1\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a3\(2\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a3\(4\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a4\(1\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a4\(2\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a4\(3\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a4\(4\):*:*:*:*:*:*:*
          *cpe:2.3:o:cisco:nx-os:6.0\(2\)a4\(5\

Initial Analysis by NIST 9/04/2020 12:38:54 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added	CWE		NIST CWE-476
Added	CPE Configuration		Record truncated, showing 500 of 954 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:fxos::::::::* versions from (including) 1.1 up to (excluding) 1.1.4.179 cpe:2.3:o:cisco:fxos::::::::* versions from (including) 2.0 up to (excluding) 2.0.1.153 cpe:2.3:o:cisco:fxos::::::::* versions from (including) 2.1 up to (excluding) 2.1.1.86 cpe:2.3:o:cisco:fxos::::::::* versions from (including) 2.2 up to (excluding) 2.2.1.70 OR cpe:2.3:h:cisco:firepower_4110:-:::::::*
Added	CPE Configuration		Record truncated, showing 500 of 651 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 3.2 up to (excluding) 3.2\(3o\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 4.0 up to (excluding) 4.0\(4i\) cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 4.1 up to (excluding) 4.1\(1c\) OR cpe:2.3:h:cisco:ucs_6248up:-:::::::* cpe:2.3:h:cisco:ucs_6296up:-:::::::* cpe:2.3:h:cisco:ucs_6300:-:::::::*
Added	CPE Configuration		Record truncated, showing 500 of 4562 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:-::::::: OR cpe:2.3:h:cisco:mds_9100:-:::::::* cpe:2.3:h:cisco:mds_9200:-:::::::* cpe:2.3:h:cisco:mds_9500:-:::::::* cpe:2.3:h:cisco:mds_9700:-:::::::* 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
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-cfs-dos-dAmnymbd No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-cfs-dos-dAmnymbd Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2020-3517
NVD Published Date:
08/27/2020
NVD Last Modified:
11/21/2024
Source:
Cisco Systems, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2020-3517 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 12:31:14 AM

CVE Modified by Cisco Systems, Inc. 5/14/2024 3:11:52 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

CPE Deprecation Remap by NIST 4/20/2023 11:12:08 AM

Reanalysis by NIST 8/02/2022 12:23:17 PM

Initial Analysis by NIST 9/04/2020 12:38:54 PM

Quick Info