NVD

CVE-2021-1588 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 MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation when an affected device is processing an MPLS echo-request or echo-reply packet. An attacker could exploit this vulnerability by sending malicious MPLS echo-request or echo-reply packets to an interface that is enabled for MPLS forwarding on the affected device. A successful exploit could allow the attacker to cause the MPLS OAM process to crash and restart multiple times, causing the affected device to reload and resulting 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:

CNA: Cisco Systems, Inc.

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.0 MEDIUM

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

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM	Patch Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM	Patch Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	NIST
CWE-125	Out-of-bounds Read	NIST
CWE-126	Buffer Over-read	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Initial Analysis by NIST 9/03/2021 8:53:06 AM

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:P)
Added	CWE		NIST CWE-20
Added	CWE		NIST CWE-125
Added	CPE Configuration		Record truncated, showing 500 of 3990 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.0\(3\)i7\(9\)::::::: cpe:2.3:o:cisco:nx-os:8.4\(1\)::::::: cpe:2.3:o:cisco:nx-os:9.3\(7\)::::::: OR cpe:2.3:h:cisco:nexus_3000:-:::::::* cpe:2.3:h:cisco:nexus_3048:-:::::::* cpe:2.3:h:cisco:nexus_31108pc-v:-:::::::* cpe:2.3:h:cisco:nexus_31108tc-v:-:::::::* cpe:2.3:h:cisco:nexus_31128pq:-:::::::* cpe:2.3:h:cisco:n
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM Patch, Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-1588
NVD Published Date:
08/25/2021
NVD Last Modified:
11/21/2024
Source:
Cisco Systems, Inc.

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