CVE-2021-1588

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.

CVSS v3.0 8.6 HIGH
CVSS v2.0 5.0 MEDIUM

8.6^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

5.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

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-mpls-oam-dos-sGO9x5GM	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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:nexus_3132c-z:-:::::::*
	cpe:2.3:h:cisco:nexus_3132q-v:-:::::::*
	cpe:2.3:h:cisco:nexus_3132q-x\/3132q-xl:-:::::::*
	cpe:2.3:h:cisco:nexus_3164q:-:::::::*
	cpe:2.3:h:cisco:nexus_3172pq\/pq-xl:-:::::::*
	cpe:2.3:h:cisco:nexus_3172tq-xl:-:::::::*
	cpe:2.3:h:cisco:nexus_3232c:-:::::::*
	cpe:2.3:h:cisco:nexus_3264c-e:-:::::::*
	cpe:2.3:h:cisco:nexus_3264q:-:::::::*
	cpe:2.3:h:cisco:nexus_3408-s:-:::::::*
	cpe:2.3:h:cisco:nexus_34180yc:-:::::::*
	cpe:2.3:h:cisco:nexus_3432d-s:-:::::::*
	cpe:2.3:h:cisco:nexus_3464c:-:::::::*
	cpe:2.3:h:cisco:nexus_3524-x\/xl:-:::::::*
	cpe:2.3:h:cisco:nexus_3548-x\/xl:-:::::::*
	cpe:2.3:h:cisco:nexus_36180yc-r:-:::::::*
	cpe:2.3:h:cisco:nexus_3636c-r:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_10-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_18-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_4-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_9-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_9000v:-:::::::*
	cpe:2.3:h:cisco:nexus_92160yc-x:-:::::::*
	cpe:2.3:h:cisco:nexus_92300yc:-:::::::*
	cpe:2.3:h:cisco:nexus_92304qc:-:::::::*
	cpe:2.3:h:cisco:nexus_92348gc-x:-:::::::*
	cpe:2.3:h:cisco:nexus_9236c:-:::::::*
	cpe:2.3:h:cisco:nexus_9272q:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-ex:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-ex-24:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-fx:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:::::::*
	cpe:2.3:h:cisco:nexus_93108tc-fx3p:-:::::::*
	cpe:2.3:h:cisco:nexus_93120tx:-:::::::*
	cpe:2.3:h:cisco:nexus_93128tx:-:::::::*
	cpe:2.3:h:cisco:nexus_9316d-gx:-:::::::*
	cpe:2.3:h:cisco:nexus_93180lc-ex:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-ex:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx3:-:::::::*
	cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:::::::*
	cpe:2.3:h:cisco:nexus_93216tc-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_93240yc-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_9332c:-:::::::*
	cpe:2.3:h:cisco:nexus_9332pq:-:::::::*
	cpe:2.3:h:cisco:nexus_93360yc-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_9336c-fx2:-:::::::*
	cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:::::::*
	cpe:2.3:h:cisco:nexus_9348gc-fxp:-:::::::*
	cpe:2.3:h:cisco:nexus_93600cd-gx:-:::::::*
	cpe:2.3:h:cisco:nexus_9364c:-:::::::*
	cpe:2.3:h:cisco:nexus_9364c-gx:-:::::::*
	cpe:2.3:h:cisco:nexus_9372px:-:::::::*
	cpe:2.3:h:cisco:nexus_9372px-e:-:::::::*
	cpe:2.3:h:cisco:nexus_9372tx:-:::::::*
	cpe:2.3:h:cisco:nexus_9372tx-e:-:::::::*
	cpe:2.3:h:cisco:nexus_9396px:-:::::::*
cpe:2.3:h:cisco:nexus_9396tx:-:::::::*
cpe:2.3:h:cisco:nexus_9508:-:::::::*

Information

Published : 2021-08-25 13:15

Updated : 2021-09-03 05:53

NVD link : CVE-2021-1588

Mitre link : CVE-2021-1588

JSON object : View

CWE

CWE-125

Out-of-bounds Read

CWE-20

Improper Input Validation

Products Affected

cisco

nexus_36180yc-r
nexus_3132c-z
nexus_9372tx-e
nexus_9236c
nexus_9372px
nexus_9396tx
nexus_93108tc-ex
nexus_9336c-fx2
nexus_7000_9-slot
nexus_3636c-r
nexus_93240yc-fx2
nexus_93108tc-fx
nexus_7000_10-slot
nexus_93180yc-fx3s
nexus_31108tc-v
nexus_3164q
nexus_92348gc-x
nexus_93180yc-fx-24
nexus_3408-s
nexus_93120tx
nexus_93216tc-fx2
nexus_9372px-e
nexus_3000
nexus_3264q
nexus_93180lc-ex
nexus_93108tc-ex-24
nexus_93108tc-fx-24
nexus_3132q-x\/3132q-xl
nexus_34180yc
nexus_93360yc-fx2
nexus_93180yc-ex
nexus_93180yc-fx3
nexus_9336c-fx2-e
nexus_3232c
nexus_3172tq-xl
nexus_92160yc-x
nexus_93600cd-gx
nexus_9364c
nexus_92300yc
nexus_9272q
nexus_3432d-s
nexus_7000_4-slot
nexus_7000_18-slot
nexus_3548-x\/xl
nexus_93128tx
nexus_31108pc-v
nexus_93180yc-fx
nexus_9332c
nexus_9372tx
nexus_93180yc-ex-24
nexus_3464c
nx-os
nexus_9316d-gx
nexus_9332pq
nexus_9396px
nexus_3524-x\/xl
nexus_93108tc-fx3p
nexus_9000v
nexus_92304qc
nexus_9348gc-fxp
nexus_3132q-v
nexus_3048
nexus_3172pq\/pq-xl
nexus_31128pq
nexus_3264c-e
nexus_9508
nexus_9364c-gx

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM", "name": "20210825 Cisco NX-OS Software MPLS OAM Denial of Service Vulnerability", "tags": ["Patch", "Vendor Advisory"], "refsource": "CISCO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-125"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-1588", "ASSIGNER": "psirt@cisco.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 3.9}}, "publishedDate": "2021-08-25T20:15Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:cisco:nx-os:7.0\\(3\\)i7\\(9\\):*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:cisco:nx-os:8.4\\(1\\):*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:cisco:nx-os:9.3\\(7\\):*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_31108pc-v:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_31108tc-v:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3132q-v:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3132q-x\\/3132q-xl:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3172pq\\/pq-xl:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3172tq-xl:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3232c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3264c-e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3264q:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3408-s:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_34180yc:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3432d-s:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3464c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3524-x\\/xl:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3548-x\\/xl:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_36180yc-r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_3636c-r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_7000_10-slot:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_7000_18-slot:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_7000_4-slot:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_7000_9-slot:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9000v:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92300yc:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_92348gc-x:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-ex-24:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93108tc-fx:-:*:*:*:*:*:*:*", "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-fx3p:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9316d-gx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180lc-ex:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:*", "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-fx:-:*:*:*:*:*:*:*", "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_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_93216tc-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93240yc-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9332c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93360yc-fx2:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9336c-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_9348gc-fxp:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_93600cd-gx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9364c:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9364c-gx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372px-e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9372tx-e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-09-03T12:53Z"}

8.6 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

5.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

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