CVE-2021-1367

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.

CVSS v3.0 4.3 MEDIUM
CVSS v2.0 2.9 LOW

4.3^/10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

2.9^/10

CVSS v2.0 : LOW

V2 Legend

Vector : AV:A/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 5.5 / Impact : 2.9

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:nx-os:9.3\(5\):*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:nexus_9000v_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_92160yc-x_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_92300yc_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_92304qc_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_92348gc-x_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_9236c_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_9272q_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-ex-24_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-ex_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-fx_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_9332pq:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-ex:-:::::::*
	cpe:2.3:h:cisco:nexus_93128tx:-:::::::*
	cpe:2.3:h:cisco:nexus_93120tx:-:::::::*
	cpe:2.3:h:cisco:nexus_93180lc-ex:-:::::::*
	cpe:2.3:h:cisco:nexus_9316d-gx:-:::::::*
	cpe:2.3:h:cisco:nexus_93600cd-gx:-:::::::*
	cpe:2.3:h:cisco:nexus_9348gc-fxp:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx:-:::::::*
	cpe:2.3:h:cisco:nexus_93240yc-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_9364c:-:::::::*
	cpe:2.3:h:cisco:nexus_9336c-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_9332c:-:::::::*
	cpe:2.3:h:cisco:nexus_9336pq:-:::::::*
	cpe:2.3:h:cisco:nexus_93360yc-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_93216tc-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:::::::*
	cpe:2.3:h:cisco:nexus_9364c-gx:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx3:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:::::::*
	cpe:2.3:h:cisco:nexus_9372tx:-:::::::*
	cpe:2.3:h:cisco:nexus_9516:-:::::::*
	cpe:2.3:h:cisco:nexus_9396px:-:::::::*
	cpe:2.3:h:cisco:nexus_9508:-:::::::*
	cpe:2.3:h:cisco:nexus_9372px:-:::::::*
	cpe:2.3:h:cisco:nexus_9504:-:::::::*
	cpe:2.3:h:cisco:nexus_9396tx:-:::::::*
	cpe:2.3:h:cisco:nexus_9372tx-e:-:::::::*
	cpe:2.3:h:cisco:nexus_9372px-e:-:::::::*

Information

Published : 2021-02-24 12:15

Updated : 2021-03-09 11:21

NVD link : CVE-2021-1367

Mitre link : CVE-2021-1367

JSON object : View

CWE

CWE-20

Improper Input Validation

Products Affected

cisco

nexus_9372tx-e
nexus_92348gc-x_switch
nexus_9372px
nexus_9396tx
nexus_9336c-fx2
nexus_93240yc-fx2
nexus_93180yc-fx3s
nexus_93180yc-fx-24
nexus_93120tx
nexus_93216tc-fx2
nexus_93108tc-ex-24_switch
nexus_92300yc_switch
nexus_9372px-e
nexus_93180lc-ex
nexus_93108tc-fx_switch
nexus_93108tc-fx-24
nexus_93360yc-fx2
nexus_93180yc-ex
nexus_9516
nexus_93180yc-fx3
nexus_9336c-fx2-e
nexus_93600cd-gx
nexus_9364c
nexus_9336pq
nexus_92304qc_switch
nexus_9272q_switch
nexus_9504
nexus_93128tx
nexus_9372tx
nexus_93180yc-fx
nexus_9332c
nexus_93180yc-ex-24
nexus_9508
nx-os
nexus_9316d-gx
nexus_9236c_switch
nexus_9332pq
nexus_9396px
nexus_92160yc-x_switch
nexus_9348gc-fxp
nexus_93108tc-ex_switch
nexus_9000v_switch
nexus_9364c-gx

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-pim-dos-Y8SjMz4", "name": "20210224 Cisco NX-OS Software Protocol Independent Multicast Denial of Service Vulnerability", "tags": ["Vendor Advisory"], "refsource": "CISCO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-1367", "ASSIGNER": "psirt@cisco.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 2.9, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "LOW", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 5.5, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}}, "publishedDate": "2021-02-24T20:15Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:cisco:nx-os:9.3\\(5\\):*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:cisco:nexus_9000v_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92160yc-x_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92300yc_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92304qc_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92348gc-x_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9236c_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9272q_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-ex-24_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-ex_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-fx_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180lc-ex:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9316d-gx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93600cd-gx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9348gc-fxp:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-fx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93240yc-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9364c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9336c-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9332c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9336pq:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93360yc-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93216tc-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9364c-gx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-fx3:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372tx-e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372px-e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-03-09T19:21Z"}

4.3 /10

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

2.9 /10

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

JSON object

Attach tags to CVE-2021-1367

4.3^/10

2.9^/10

Attach tags to `CVE-2021-1367`