CVE-2021-1586

CVSS V2 Medium 5 CVSS V3 High 8.6
Description
A vulnerability in the Multi-Pod or Multi-Site network configurations for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to unexpectedly restart the device, resulting in a denial of service (DoS) condition. This vulnerability exists because TCP traffic sent to a specific port on an affected device is not properly sanitized. An attacker could exploit this vulnerability by sending crafted TCP data to a specific port that is listening on a public-facing IP address for the Multi-Pod or Multi-Site configuration. A successful exploit could allow the attacker to cause the device to restart unexpectedly, resulting in a DoS condition.
Overview
  • CVE ID
  • CVE-2021-1586
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-25T20:15:11
  • Last Modified Date
  • 2021-09-02T17:18:15
Weakness Enumerations
CWE URL
CWE-345 http://cwe.mitre.org/data/definitions/345.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:nx-os:15.0\(2e\):*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:nx-os:15.1\(1h\):*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:nexus_9000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_92300yc:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_92348gc-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93108tc-ex-24:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93108tc-fx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93108tc-fx3p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9316d-gx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180lc-ex:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-ex-24:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-fx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-fx-24:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-fx3:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93180yc-fx3s:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93216tc-fx2:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93240yc-fx2:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9332c:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93360yc-fx2:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9336c-fx2:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9336c-fx2-e:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9348gc-fxp:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_93600cd-gx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9364c:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9364c-gx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9372px-e:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9372tx-e:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 8.6
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n9kaci-tcp-dos-YXukt6gM Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-1586
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1586
History
Created Old Value New Value Data Type Notes
2022-05-10 16:07:55 Added to TrackCVE
2022-12-05 09:06:22 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-05 09:06:22 2021-08-25T20:15Z 2021-08-25T20:15:11 CVE Published Date updated
2022-12-05 09:06:22 2021-09-02T17:18:15 CVE Modified Date updated
2022-12-05 09:06:22 Analyzed Vulnerability Status updated