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CVE-2021-1367 Details

Description

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted PIM packet to an affected device. A successful exploit could allow the attacker to cause a traffic loop, resulting in a DoS condition.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4	CVE	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
cisco nx-os	9.3(5)
CPE cpe:2.3:o:cisco:nx-os:9.3(5):::::::* Remediation No remediation found in references.
cisco nexus 9000v switch	All versions
CPE cpe:2.3:h:cisco:nexus_9000v_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 92160yc-x switch	All versions
CPE cpe:2.3:h:cisco:nexus_92160yc-x_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 92300yc switch	All versions
CPE cpe:2.3:h:cisco:nexus_92300yc_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 92304qc switch	All versions
CPE cpe:2.3:h:cisco:nexus_92304qc_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 92348gc-x switch	All versions
CPE cpe:2.3:h:cisco:nexus_92348gc-x_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 9236c switch	All versions
CPE cpe:2.3:h:cisco:nexus_9236c_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 9272q switch	All versions
CPE cpe:2.3:h:cisco:nexus_9272q_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-ex-24 switch	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-ex-24_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-ex switch	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-ex_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-fx-24	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93108tc-fx switch	All versions
CPE cpe:2.3:h:cisco:nexus_93108tc-fx_switch:-:::::::* Remediation No remediation found in references.
cisco nexus 93120tx	All versions
CPE cpe:2.3:h:cisco:nexus_93120tx:-:::::::* Remediation No remediation found in references.
cisco nexus 93128tx	All versions
CPE cpe:2.3:h:cisco:nexus_93128tx:-:::::::* Remediation No remediation found in references.
cisco nexus 9316d-gx	All versions
CPE cpe:2.3:h:cisco:nexus_9316d-gx:-:::::::* Remediation No remediation found in references.
cisco nexus 93180lc-ex	All versions
CPE cpe:2.3:h:cisco:nexus_93180lc-ex:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-ex	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-ex:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-ex-24	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx-24	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx3	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx3:-:::::::* Remediation No remediation found in references.
cisco nexus 93180yc-fx3s	All versions
CPE cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:::::::* Remediation No remediation found in references.
cisco nexus 93216tc-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_93216tc-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 93240yc-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_93240yc-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 9332c	All versions
CPE cpe:2.3:h:cisco:nexus_9332c:-:::::::* Remediation No remediation found in references.
cisco nexus 9332pq	All versions
CPE cpe:2.3:h:cisco:nexus_9332pq:-:::::::* Remediation No remediation found in references.
cisco nexus 93360yc-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_93360yc-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 9336c-fx2	All versions
CPE cpe:2.3:h:cisco:nexus_9336c-fx2:-:::::::* Remediation No remediation found in references.
cisco nexus 9336c-fx2-e	All versions
CPE cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:::::::* Remediation No remediation found in references.
cisco nexus 9336pq	All versions
CPE cpe:2.3:h:cisco:nexus_9336pq:-:::::::* Remediation No remediation found in references.
cisco nexus 9348gc-fxp	All versions
CPE cpe:2.3:h:cisco:nexus_9348gc-fxp:-:::::::* Remediation No remediation found in references.
cisco nexus 93600cd-gx	All versions
CPE cpe:2.3:h:cisco:nexus_93600cd-gx:-:::::::* Remediation No remediation found in references.
cisco nexus 9364c	All versions
CPE cpe:2.3:h:cisco:nexus_9364c:-:::::::* Remediation No remediation found in references.
cisco nexus 9364c-gx	All versions
CPE cpe:2.3:h:cisco:nexus_9364c-gx:-:::::::* Remediation No remediation found in references.
cisco nexus 9372px	All versions
CPE cpe:2.3:h:cisco:nexus_9372px:-:::::::* Remediation No remediation found in references.
cisco nexus 9372px-e	All versions
CPE cpe:2.3:h:cisco:nexus_9372px-e:-:::::::* Remediation No remediation found in references.
cisco nexus 9372tx	All versions
CPE cpe:2.3:h:cisco:nexus_9372tx:-:::::::* Remediation No remediation found in references.
cisco nexus 9372tx-e	All versions
CPE cpe:2.3:h:cisco:nexus_9372tx-e:-:::::::* Remediation No remediation found in references.
cisco nexus 9396px	All versions
CPE cpe:2.3:h:cisco:nexus_9396px:-:::::::* Remediation No remediation found in references.
cisco nexus 9396tx	All versions
CPE cpe:2.3:h:cisco:nexus_9396tx:-:::::::* Remediation No remediation found in references.
cisco nexus 9504	All versions
CPE cpe:2.3:h:cisco:nexus_9504:-:::::::* Remediation No remediation found in references.
cisco nexus 9508	All versions
CPE cpe:2.3:h:cisco:nexus_9508:-:::::::* Remediation No remediation found in references.
cisco nexus 9516	All versions
CPE cpe:2.3:h:cisco:nexus_9516:-:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Mar 9, 2021	Initial Analysis	[email protected]

CVE-2021-1367 Details

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