NVD

CVE-2021-1387 Detail

Modified

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

A vulnerability in the network stack 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 exists because the software improperly releases resources when it processes certain IPv6 packets that are destined to an affected device. An attacker could exploit this vulnerability by sending multiple crafted IPv6 packets to an affected device. A successful exploit could cause the network stack to run out of available buffers, impairing operations of control plane and management plane protocols and resulting in a DoS condition. Manual intervention would be required to restore normal operations on the affected device. For more information about the impact of this vulnerability, see the Details section of this advisory.

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: 4.3 MEDIUM

Vector: (AV:N/AC:M/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-ipv6-netstack-edXPGV7K	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipv6-netstack-edXPGV7K	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-401	Missing Release of Memory after Effective Lifetime	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

5 change records found show changes

Reanalysis by NIST 7/15/2022 12:24:13 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 11585 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\
Added	CPE Configuration		Record truncated, showing 500 of 3995 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.0\(0\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(1\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(2\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(4\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(4\)n1\(1a\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(5\)n1\(1\)::::::: *cpe:2.3:o:cisco:nx-os:7.0\(5\)n1\(1
Added	CPE Configuration		Record truncated, showing 500 of 3714 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.0\(0\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(1\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(2\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(4\)n1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(4\)n1\(1a\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(5\)n1\(1\)::::::: *cpe:2.3:o:cisco:nx-os:7.0\(5\)n1\(1
Added	CPE Configuration		Record truncated, showing 500 of 6962 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.0\(3\)f1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f2\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f2\(2\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(3\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(3a\)::::::: cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(3c\)::::::: *cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(
Added	CPE Configuration		Record truncated, showing 500 of 2414 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.2\(0\)d1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.2\(1\)d1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.2\(2\)d1\(1\)::::::: cpe:2.3:o:cisco:nx-os:7.2\(2\)d1\(2\)::::::: cpe:2.3:o:cisco:nx-os:7.2\(2\)d1\(3\)::::::: cpe:2.3:o:cisco:nx-os:7.2\(2\)d1\(4\)::::::: cpe:2.3:o:cisco:nx-os:7.3\(0\)d1\(1\)::::::: *cpe:2.3:o:cisco:nx-os:7.3\(0\)dx\(1\
Removed	CPE Configuration	Record truncated, showing 500 of 2387 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.3\(6\)d1\(1\)::::::: OR cpe:2.3:h:cisco:mds_9148s:-:::::::* cpe:2.3:h:cisco:mds_9250i:-:::::::* cpe:2.3:h:cisco:mds_9706:-:::::::* cpe:2.3:h:cisco:mds_9710:-:::::::* cpe:2.3:h:cisco:nexus_3048:-:::::::* cpe:2.3:h:cisco:nexus_31108pv-v:-:::::::* cpe:2.3:h:cisco:nexus_31108tc-v:-:::::::* cpe:2.3:h:cisco:nexus_31128pq:-:

Initial Analysis by NIST 3/03/2021 12:16:24 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:M/Au:N/C:N/I:N/A:P)
Added	CPE Configuration		AND OR cpe:2.3:a:cisco:unified_computing_system::::::::* versions from (including) 4.0 up to (excluding) 4.0\(4k\) cpe:2.3:a:cisco:unified_computing_system::::::::* versions from (including) 4.1 up to (excluding) 4.1\(1e\) OR cpe:2.3:h:cisco:ucs_64108:-:::::::* cpe:2.3:h:cisco:ucs_6454:-:::::::*
Added	CPE Configuration		Record truncated, showing 500 of 2387 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:nx-os:7.3\(6\)d1\(1\)::::::: OR cpe:2.3:h:cisco:mds_9148s:-:::::::* cpe:2.3:h:cisco:mds_9250i:-:::::::* cpe:2.3:h:cisco:mds_9706:-:::::::* cpe:2.3:h:cisco:mds_9710:-:::::::* cpe:2.3:h:cisco:nexus_3048:-:::::::* cpe:2.3:h:cisco:nexus_31108pv-v:-:::::::* cpe:2.3:h:cisco:nexus_31108tc-v:-:::::::* cpe:2.3:h:cisco:nexus_31128pq:-:
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipv6-netstack-edXPGV7K No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ipv6-netstack-edXPGV7K Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-1387
NVD Published Date:
02/24/2021
NVD Last Modified:
11/21/2024
Source:
Cisco Systems, Inc.

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