Vulnerability-Lookup

BDU:2019-03294 (CVE-2019-1977)

Vulnerability from fstec – Published: 2019-09-27 – Updated: 2021-03-23 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции Endpoint Learning сетевой операционной системы NX-OS коммутаторов Cisco Nexus серии 9000, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции Endpoint Learning сетевой операционной системы NX-OS коммутаторов Cisco Nexus серии 9000 связана с ошибками управления состоянием. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, вызвать отказ в обслуживании

Severity

5.4 (Medium) CVSS 2.0


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

6.8 (Medium) CVSS 3.0


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Timing and state manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-371 - Проблемы управления состоянием

Aliases

CVE-2019-1977

References

2 references

URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-…
https://nvd.nist.gov/vuln/detail/CVE-2019-1977

Impacted products

1 product from 2 vendors

Vendors

Cisco Systems, Inc.

Products

NX-OS

Versions

12.0.1m (NX-OS), 12.0.2g (NX-OS), 12.0.1n (NX-OS), 12.0.1o (NX-OS), 12.0.1p (NX-OS), 12.0.1q (NX-OS), 12.0.2h (NX-OS), 12.0.2l (NX-OS), 12.0.2m (NX-OS), 12.0.2n (NX-OS), 12.0.2o (NX-OS), 12.0.2f (NX-OS), 12.0.1r (NX-OS), 12.1.1h (NX-OS), 12.1.2e (NX-OS), 12.1.3g (NX-OS), 12.1.4a (NX-OS), 12.1.1i (NX-OS), 12.1.2g (NX-OS), 12.1.2k (NX-OS), 12.1.3h (NX-OS), 12.1.3j (NX-OS), 12.2.1n (NX-OS), 12.2.2e (NX-OS), 12.2.3j (NX-OS), 12.2.4f (NX-OS), 12.2.3p (NX-OS), 12.2.3r (NX-OS), 12.2.3s (NX-OS), 12.2.3t (NX-OS), 12.2.2f (NX-OS), 12.2.2g (NX-OS), 12.2.2i (NX-OS), 12.2.2j (NX-OS), 12.2.2k (NX-OS), 12.2.2q (NX-OS), 12.2.1o (NX-OS), 12.2.1k (NX-OS), 12.3.1e (NX-OS), 12.3.1f (NX-OS), 12.3.1i (NX-OS), 12.3.1l (NX-OS), 12.3.1o (NX-OS), 12.3.1p (NX-OS), 13.0.1k (NX-OS), 13.0.2h (NX-OS), 13.0.2k (NX-OS), 13.0.2n (NX-OS), 13.0.1i (NX-OS), 13.0.2m (NX-OS), 13.1.1i (NX-OS), 13.1.2m (NX-OS), 13.1.2o (NX-OS), 13.1.2p (NX-OS), 13.1.2q (NX-OS), 13.1.2s (NX-OS), 13.1.2t (NX-OS)

Product types

Operating system

Platforms

Cisco Systems, Inc. NX-OS 12.0.1m Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2g Cisco Nexus 9000 Series, Inc. NX-OS 12.0.1n Cisco Nexus 9000 Series, Inc. NX-OS 12.0.1o Cisco Nexus 9000 Series, Inc. NX-OS 12.0.1p Cisco Nexus 9000 Series, Inc. NX-OS 12.0.1q Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2h Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2l Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2m Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2n Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2o Cisco Nexus 9000 Series, Inc. NX-OS 12.0.2f Cisco Nexus 9000 Series, Inc. NX-OS 12.0.1r Cisco Nexus 9000 Series, Inc. NX-OS 12.1.1h Cisco Nexus 9000 Series, Inc. NX-OS 12.1.2e Cisco Nexus 9000 Series, Inc. NX-OS 12.1.3g Cisco Nexus 9000 Series, Inc. NX-OS 12.1.4a Cisco Nexus 9000 Series, Inc. NX-OS 12.1.1i Cisco Nexus 9000 Series, Inc. NX-OS 12.1.2g Cisco Nexus 9000 Series, Inc. NX-OS 12.1.2k Cisco Nexus 9000 Series, Inc. NX-OS 12.1.3h Cisco Nexus 9000 Series, Inc. NX-OS 12.1.3j Cisco Nexus 9000 Series, Inc. NX-OS 12.2.1n Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2e Cisco Nexus 9000 Series, Inc. NX-OS 12.2.3j Cisco Nexus 9000 Series, Inc. NX-OS 12.2.4f Cisco Nexus 9000 Series, Inc. NX-OS 12.2.3p Cisco Nexus 9000 Series, Inc. NX-OS 12.2.3r Cisco Nexus 9000 Series, Inc. NX-OS 12.2.3s Cisco Nexus 9000 Series, Inc. NX-OS 12.2.3t Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2f Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2g Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2i Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2j Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2k Cisco Nexus 9000 Series, Inc. NX-OS 12.2.2q Cisco Nexus 9000 Series, Inc. NX-OS 12.2.1o Cisco Nexus 9000 Series, Inc. NX-OS 12.2.1k Cisco Nexus 9000 Series, Inc. NX-OS 12.3.1e Cisco Nexus 9000 Series, Inc. NX-OS 12.3.1f Cisco Nexus 9000 Series, Inc. NX-OS 12.3.1i Cisco Nexus 9000 Series, Inc. NX-OS 12.3.1l Cisco Nexus 9000 Series, Inc. NX-OS 12.3.1o Cisco Nexus 9000 Series, Inc. NX-OS 12.3.1p Cisco Nexus 9000 Series, Inc. NX-OS 13.0.1k Cisco Nexus 9000 Series, Inc. NX-OS 13.0.2h Cisco Nexus 9000 Series, Inc. NX-OS 13.0.2k Cisco Nexus 9000 Series, Inc. NX-OS 13.0.2n Cisco Nexus 9000 Series, Inc. NX-OS 13.0.1i Cisco Nexus 9000 Series, Inc. NX-OS 13.0.2m Cisco Nexus 9000 Series, Inc. NX-OS 13.1.1i Cisco Nexus 9000 Series, Inc. NX-OS 13.1.2m Cisco Nexus 9000 Series, Inc. NX-OS 13.1.2o Cisco Nexus 9000 Series, Inc. NX-OS 13.1.2p Cisco Nexus 9000 Series, Inc. NX-OS 13.1.2q Cisco Nexus 9000 Series, Inc. NX-OS 13.1.2s Cisco Nexus 9000 Series, Inc. NX-OS 13.1.2t Cisco Nexus 9000 Series

Mitigations

Использование рекомендаций: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nexus-aci-dos

Credits

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:H/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/AC:H/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": "12.0.1m (NX-OS), 12.0.2g (NX-OS), 12.0.1n (NX-OS), 12.0.1o (NX-OS), 12.0.1p (NX-OS), 12.0.1q (NX-OS), 12.0.2h (NX-OS), 12.0.2l (NX-OS), 12.0.2m (NX-OS), 12.0.2n (NX-OS), 12.0.2o (NX-OS), 12.0.2f (NX-OS), 12.0.1r (NX-OS), 12.1.1h (NX-OS), 12.1.2e (NX-OS), 12.1.3g (NX-OS), 12.1.4a (NX-OS), 12.1.1i (NX-OS), 12.1.2g (NX-OS), 12.1.2k (NX-OS), 12.1.3h (NX-OS), 12.1.3j (NX-OS), 12.2.1n (NX-OS), 12.2.2e (NX-OS), 12.2.3j (NX-OS), 12.2.4f (NX-OS), 12.2.3p (NX-OS), 12.2.3r (NX-OS), 12.2.3s (NX-OS), 12.2.3t (NX-OS), 12.2.2f (NX-OS), 12.2.2g (NX-OS), 12.2.2i (NX-OS), 12.2.2j (NX-OS), 12.2.2k (NX-OS), 12.2.2q (NX-OS), 12.2.1o (NX-OS), 12.2.1k (NX-OS), 12.3.1e (NX-OS), 12.3.1f (NX-OS), 12.3.1i (NX-OS), 12.3.1l (NX-OS), 12.3.1o (NX-OS), 12.3.1p (NX-OS), 13.0.1k (NX-OS), 13.0.2h (NX-OS), 13.0.2k (NX-OS), 13.0.2n (NX-OS), 13.0.1i (NX-OS), 13.0.2m (NX-OS), 13.1.1i (NX-OS), 13.1.2m (NX-OS), 13.1.2o (NX-OS), 13.1.2p (NX-OS), 13.1.2q (NX-OS), 13.1.2s (NX-OS), 13.1.2t (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": "\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:\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nexus-aci-dos",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "28.08.2019",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "23.03.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "27.09.2019",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2019-03294",
  "\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-2019-1977",
  "\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 12.0.1m Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2g Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.1n Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.1o Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.1p Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.1q Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2h Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2l Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2m Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2n Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2o Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.2f Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.0.1r Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.1h Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.2e Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.3g Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.4a Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.1i Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.2g Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.2k Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.3h Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.1.3j Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.1n Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2e Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.3j Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.4f Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.3p Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.3r Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.3s Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.3t Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2f Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2g Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2i Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2j Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2k Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.2q Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.1o Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.2.1k Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.3.1e Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.3.1f Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.3.1i Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.3.1l Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.3.1o Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 12.3.1p Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.0.1k Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.0.2h Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.0.2k Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.0.2n Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.0.1i Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.0.2m Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.1i Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.2m Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.2o Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.2p Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.2q Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.2s Cisco Nexus 9000 Series, Cisco Systems, Inc. NX-OS 13.1.2t Cisco Nexus 9000 Series",
  "\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 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 Endpoint Learning \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b NX-OS \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u043e\u0432 Cisco Nexus \u0441\u0435\u0440\u0438\u0438 9000, \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": "\u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c (CWE-371)",
  "\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 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 Endpoint Learning \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b NX-OS \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u043e\u0432 Cisco Nexus \u0441\u0435\u0440\u0438\u0438 9000 \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c. \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",
  "\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": "-",
  "\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": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0440\u043e\u043a\u0430\u043c\u0438 \u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nexus-aci-dos\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-1977",
  "\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-371",
  "\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": "\u0421\u0440\u0435\u0434\u043d\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 5,4)\n\u0421\u0440\u0435\u0434\u043d\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 6,8)"
}

CVE-2019-1977 (GCVE-0-2019-1977)

Vulnerability from cvelistv5 – Published: 2019-08-29 21:50 – Updated: 2024-11-21 19:15

Title

Cisco Nexus 9000 Series Fabric Switches ACI Mode Border Leaf Endpoint Learning Vulnerability

Summary

A vulnerability within the Endpoint Learning feature of Cisco Nexus 9000 Series Switches running in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an endpoint device in certain circumstances. The vulnerability is due to improper endpoint learning when packets are received on a specific port from outside the ACI fabric and destined to an endpoint located on a border leaf when Disable Remote Endpoint Learning has been enabled. This can result in a Remote (XR) entry being created for the impacted endpoint that will become stale if the endpoint migrates to a different port or leaf switch. This results in traffic not reaching the impacted endpoint until the Remote entry can be relearned by another mechanism.

Severity

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-21 18:57 UTC

CWE

CWE-371

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisoryx_refsource_CISCO

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Nexus 9000 Series Fabric Switches in ACI	Affected: unspecified , < 12.2(4M) (custom)

Date Public

2019-08-28 00:00

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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:2019-03294 (CVE-2019-1977)

CVE-2019-1977 (GCVE-0-2019-1977)

Tags

Sightings

Nomenclature

Related by attack behaviour