Vulnerability-Lookup

BDU:2024-01671 (CVE-2024-20321)

Vulnerability from fstec – Published: 2024-02-29 – Updated: 2024-03-06 – View on bdu.fstec.ru Fixed

Title

Уязвимость реализации протокола внешнего пограничного шлюза (eBGP) операционной системы Cisco NX-OS, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость реализации протокола внешнего пограничного шлюза (eBGP) операционной системы Cisco NX-OS связана с неконтролируемым расходом ресурсов. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, вызвать отказ в обслуживании путём отправки специально сформированного eBGP-трафика

Severity

7.8 (High) CVSS 2.0


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

8.6 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource exhaustion

Incidents

Being clarified

Remediation

Software update

CWE

CWE-400 - Неконтролируемый расход ресурса («Истощение ресурса»)

Aliases

CVE-2024-20321

References

1 reference

URL
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c…

Impacted products

1 product from 2 vendors

Vendors

Cisco Systems, Inc.

Products

NX-OS

Versions

7.0(3)F1 (NX-OS), 7.0(3)F2 (NX-OS), 7.0(3)F3 (NX-OS), 9.2 (NX-OS), 9.3 (NX-OS), 10.1 (NX-OS), 10.2 (NX-OS), 10.3 (NX-OS), 10.4 (NX-OS)

Product types

Operating system

Platforms

Cisco Systems, Inc. NX-OS 7.0(3)F1 Cisco Nexus 3600, Inc. NX-OS 7.0(3)F2 Cisco Nexus 3600, Inc. NX-OS 7.0(3)F3 Cisco Nexus 3600, Inc. NX-OS 9.2 Cisco Nexus 3600, Inc. NX-OS 9.3 Cisco Nexus 3600, Inc. NX-OS 10.1 Cisco Nexus 3600, Inc. NX-OS 10.2 Cisco Nexus 3600, Inc. NX-OS 10.3 Cisco Nexus 3600, Inc. NX-OS 10.4 Cisco Nexus 3600, Inc. NX-OS 7.0(3)F1 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 7.0(3)F2 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 7.0(3)F3 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 9.2 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 9.3 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 10.1 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 10.2 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 10.3 Cisco Nexus 9500 R-Series Line Cards, Inc. NX-OS 10.4 Cisco Nexus 9500 R-Series Line Cards

Mitigations

Установка обновлений из доверенных источников. В связи со сложившейся обстановкой и введенными санкциями против Российской Федерации рекомендуется устанавливать обновления программного обеспечения только после оценки всех сопутствующих рисков. Компенсирующие меры: - использование средств межсетевого экранирования для ограничения удалённого доступа; - использование систем обнаружения и предотвращения вторжений для отслеживания возможностей эксплуатации уязвимости. Использование рекомендаций производителя: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ

Credits

Для определения настроено ли устройство Cisco с функции BGP используйте команды show running-config | include "router bgp" и show running-config | include "neighbor"

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Cisco Systems, Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "7.0(3)F1 (NX-OS), 7.0(3)F2 (NX-OS), 7.0(3)F3 (NX-OS), 9.2 (NX-OS), 9.3 (NX-OS), 10.1 (NX-OS), 10.2 (NX-OS), 10.3 (NX-OS), 10.4 (NX-OS)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0423\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0438\u0437 \u0434\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u044b\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432.\n\u0412 \u0441\u0432\u044f\u0437\u0438 \u0441\u043e \u0441\u043b\u043e\u0436\u0438\u0432\u0448\u0435\u0439\u0441\u044f \u043e\u0431\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u043e\u0439 \u0438 \u0432\u0432\u0435\u0434\u0435\u043d\u043d\u044b\u043c\u0438 \u0441\u0430\u043d\u043a\u0446\u0438\u044f\u043c\u0438 \u043f\u0440\u043e\u0442\u0438\u0432 \u0420\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u043e\u0439 \u0424\u0435\u0434\u0435\u0440\u0430\u0446\u0438\u0438 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0442\u044c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u0441\u043b\u0435 \u043e\u0446\u0435\u043d\u043a\u0438 \u0432\u0441\u0435\u0445 \u0441\u043e\u043f\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0440\u0438\u0441\u043a\u043e\u0432.\n\n\u041a\u043e\u043c\u043f\u0435\u043d\u0441\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0440\u044b:\n- \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432 \u043c\u0435\u0436\u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u044d\u043a\u0440\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u043b\u044f \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u0430;\n- \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0438 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u0432\u0442\u043e\u0440\u0436\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438.\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "28.02.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "06.03.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "29.02.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-01671",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2024-20321",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "NX-OS",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Cisco Systems, Inc. NX-OS 7.0(3)F1 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 7.0(3)F2 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 7.0(3)F3 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 9.2 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 9.3 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 10.1 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 10.2 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 10.3 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 10.4 Cisco Nexus 3600, Cisco Systems, Inc. NX-OS 7.0(3)F1 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 7.0(3)F2 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 7.0(3)F3 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 9.2 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 9.3 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 10.1 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 10.2 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 10.3 Cisco Nexus 9500 R-Series Line Cards, Cisco Systems, Inc. NX-OS 10.4 Cisco Nexus 9500 R-Series Line Cards",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u043f\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u043d\u043e\u0433\u043e \u0448\u043b\u044e\u0437\u0430 (eBGP) \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Cisco NX-OS, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u0435\u043c\u044b\u0439 \u0440\u0430\u0441\u0445\u043e\u0434 \u0440\u0435\u0441\u0443\u0440\u0441\u0430 (\u00ab\u0418\u0441\u0442\u043e\u0449\u0435\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u00bb) (CWE-400)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u043f\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u043d\u043e\u0433\u043e \u0448\u043b\u044e\u0437\u0430 (eBGP) \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Cisco NX-OS \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u0435\u043c\u044b\u043c \u0440\u0430\u0441\u0445\u043e\u0434\u043e\u043c \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u043f\u0443\u0442\u0451\u043c \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e eBGP-\u0442\u0440\u0430\u0444\u0438\u043a\u0430",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": "\u0414\u043b\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u043e \u043b\u0438 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e Cisco \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 BGP \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b show running-config | include \"router bgp\" \u0438 show running-config | include \"neighbor\"",
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0418\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-400",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 8,6)"
}

CVE-2024-20321 (GCVE-0-2024-20321)

Vulnerability from cvelistv5 – Published: 2024-02-28 16:14 – Updated: 2024-08-16 20:12

Summary

A vulnerability in the External Border Gateway Protocol (eBGP) implementation 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 eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network.

Severity

8.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-03-01 16:27 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

2 products

Vendor	Product	Version
Cisco	Cisco NX-OS Software	Affected: 7.0(3)F1(1) Affected: 7.0(3)F2(1) Affected: 7.0(3)F2(2) Affected: 7.0(3)F3(1) Affected: 7.0(3)F3(2) Affected: 7.0(3)F3(3) Affected: 7.0(3)F3(3a) Affected: 7.0(3)F3(4) Affected: 7.0(3)F3(3c) Affected: 7.0(3)F3(5) Affected: 9.2(1) Affected: 9.2(2) Affected: 9.2(2t) Affected: 9.2(3) Affected: 9.2(4) Affected: 9.2(2v) Affected: 9.3(1) Affected: 9.3(2) Affected: 9.3(3) Affected: 9.3(4) Affected: 9.3(5) Affected: 9.3(6) Affected: 9.3(7) Affected: 9.3(7a) Affected: 9.3(8) Affected: 9.3(9) Affected: 9.3(10) Affected: 9.3(11) Affected: 9.3(12) Affected: 10.1(1) Affected: 10.1(2) Affected: 10.1(2t) Affected: 10.2(1) Affected: 10.2(1q) Affected: 10.2(2) Affected: 10.2(3) Affected: 10.2(3t) Affected: 10.2(4) Affected: 10.2(5) Affected: 10.2(3v) Affected: 10.2(6) Affected: 10.3(1) Affected: 10.3(2) Affected: 10.3(3) Affected: 10.3(99w) Affected: 10.3(99x) Affected: 10.3(4a) Affected: 10.4(1)
cisco	nx-os	Affected: 7.0\(3\)f1\(1\) Affected: 7.0\(3\)f2\(1\) Affected: 7.0\(3\)f2\(2\) Affected: 7.0\(3\)f3\(1\) Affected: 7.0\(3\)f3\(2\) Affected: 7.0\(3\)f3\(3\) Affected: 7.0\(3\)f3\(3a\) Affected: 7.0\(3\)f3\(4\) Affected: 7.0\(3\)f3\(3c\) Affected: 7.0\(3\)f3\(5\) Affected: 9.2\(1\) Affected: 9.2\(2\) Affected: 9.2\(2t\) Affected: 9.2\(3\) Affected: 9.2\(4\) Affected: 9.2\(2v\) Affected: 9.3\(1\) Affected: 9.3\(2\) Affected: 9.3\(3\) Affected: 9.3\(4\) Affected: 9.3\(5\) Affected: 9.3\(6\) Affected: 9.3\(7\) Affected: 9.3\(7a\) Affected: 9.3\(8\) Affected: 9.3\(9\) Affected: 9.3\(10\) Affected: 9.3\(11\) Affected: 9.3\(12\) Affected: 10.1\(1\) Affected: 10.1\(2\) Affected: 10.1\(2t\) Affected: 10.2\(1\) Affected: 10.2\(1q\) Affected: 10.2\(2\) Affected: 10.2\(3\) Affected: 10.2\(3t\) Affected: 10.2\(4\) Affected: 10.2\(5\) Affected: 10.2\(3v\) Affected: 10.2\(6\) Affected: 10.3\(1\) Affected: 10.3\(2\) Affected: 10.3\(3\) Affected: 10.3\(99w\) Affected: 10.3\(99x\) Affected: 10.3\(4a\) Affected: 10.4\(1\) 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\(2\):::::::* 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\(4\):::::::* cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(3c\):::::::* cpe:2.3:o:cisco:nx-os:7.0\(3\)f3\(5\):::::::* cpe:2.3:o:cisco:nx-os:9.2\(1\):::::::* cpe:2.3:o:cisco:nx-os:9.2\(2\):::::::* cpe:2.3:o:cisco:nx-os:9.2\(2t\):::::::* cpe:2.3:o:cisco:nx-os:9.2\(3\):::::::* cpe:2.3:o:cisco:nx-os:9.2\(4\):::::::* cpe:2.3:o:cisco:nx-os:9.2\(2v\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(1\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(2\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(3\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(4\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(5\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(6\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(7\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(7a\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(8\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(9\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(10\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(11\):::::::* cpe:2.3:o:cisco:nx-os:9.3\(12\):::::::* cpe:2.3:o:cisco:nx-os:10.1\(1\):::::::* cpe:2.3:o:cisco:nx-os:10.1\(2\):::::::* cpe:2.3:o:cisco:nx-os:10.1\(2t\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(1\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(1q\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(2\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(3\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(3t\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(4\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(5\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(3v\):::::::* cpe:2.3:o:cisco:nx-os:10.2\(6\):::::::* cpe:2.3:o:cisco:nx-os:10.3\(1\):::::::* cpe:2.3:o:cisco:nx-os:10.3\(2\):::::::* cpe:2.3:o:cisco:nx-os:10.3\(3\):::::::* cpe:2.3:o:cisco:nx-os:10.3\(99w\):::::::* cpe:2.3:o:cisco:nx-os:10.3\(99x\):::::::* cpe:2.3:o:cisco:nx-os:10.3\(4a\):::::::* cpe:2.3:o:cisco:nx-os:10.4\(1\):::::::*

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          "dateUpdated": "2024-08-01T21:59:41.467Z",
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            },
            {
              "status": "affected",
              "version": "7.0(3)F2(1)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F2(2)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(1)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(2)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(3)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(3a)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(4)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(3c)"
            },
            {
              "status": "affected",
              "version": "7.0(3)F3(5)"
            },
            {
              "status": "affected",
              "version": "9.2(1)"
            },
            {
              "status": "affected",
              "version": "9.2(2)"
            },
            {
              "status": "affected",
              "version": "9.2(2t)"
            },
            {
              "status": "affected",
              "version": "9.2(3)"
            },
            {
              "status": "affected",
              "version": "9.2(4)"
            },
            {
              "status": "affected",
              "version": "9.2(2v)"
            },
            {
              "status": "affected",
              "version": "9.3(1)"
            },
            {
              "status": "affected",
              "version": "9.3(2)"
            },
            {
              "status": "affected",
              "version": "9.3(3)"
            },
            {
              "status": "affected",
              "version": "9.3(4)"
            },
            {
              "status": "affected",
              "version": "9.3(5)"
            },
            {
              "status": "affected",
              "version": "9.3(6)"
            },
            {
              "status": "affected",
              "version": "9.3(7)"
            },
            {
              "status": "affected",
              "version": "9.3(7a)"
            },
            {
              "status": "affected",
              "version": "9.3(8)"
            },
            {
              "status": "affected",
              "version": "9.3(9)"
            },
            {
              "status": "affected",
              "version": "9.3(10)"
            },
            {
              "status": "affected",
              "version": "9.3(11)"
            },
            {
              "status": "affected",
              "version": "9.3(12)"
            },
            {
              "status": "affected",
              "version": "10.1(1)"
            },
            {
              "status": "affected",
              "version": "10.1(2)"
            },
            {
              "status": "affected",
              "version": "10.1(2t)"
            },
            {
              "status": "affected",
              "version": "10.2(1)"
            },
            {
              "status": "affected",
              "version": "10.2(1q)"
            },
            {
              "status": "affected",
              "version": "10.2(2)"
            },
            {
              "status": "affected",
              "version": "10.2(3)"
            },
            {
              "status": "affected",
              "version": "10.2(3t)"
            },
            {
              "status": "affected",
              "version": "10.2(4)"
            },
            {
              "status": "affected",
              "version": "10.2(5)"
            },
            {
              "status": "affected",
              "version": "10.2(3v)"
            },
            {
              "status": "affected",
              "version": "10.2(6)"
            },
            {
              "status": "affected",
              "version": "10.3(1)"
            },
            {
              "status": "affected",
              "version": "10.3(2)"
            },
            {
              "status": "affected",
              "version": "10.3(3)"
            },
            {
              "status": "affected",
              "version": "10.3(99w)"
            },
            {
              "status": "affected",
              "version": "10.3(99x)"
            },
            {
              "status": "affected",
              "version": "10.3(4a)"
            },
            {
              "status": "affected",
              "version": "10.4(1)"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the External Border Gateway Protocol (eBGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability exists because eBGP traffic is mapped to a shared hardware rate-limiter queue. An attacker could exploit this vulnerability by sending large amounts of network traffic with certain characteristics through an affected device. A successful exploit could allow the attacker to cause eBGP neighbor sessions to be dropped, leading to a DoS condition in the network."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-02-28T16:14:28.992Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-nxos-ebgp-dos-L3QCwVJ",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ"
        }
      ],
      "source": {
        "advisory": "cisco-sa-nxos-ebgp-dos-L3QCwVJ",
        "defects": [
          "CSCwh09703",
          "CSCwh96478"
        ],
        "discovery": "INTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2024-20321",
    "datePublished": "2024-02-28T16:14:28.992Z",
    "dateReserved": "2023-11-08T15:08:07.640Z",
    "dateUpdated": "2024-08-16T20:12:16.247Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2024-01671 (CVE-2024-20321)

CVE-2024-20321 (GCVE-0-2024-20321)

Tags

Sightings

Nomenclature

Related by attack behaviour