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BDU:2021-05906 (CVE-2021-31351)

Vulnerability from fstec – Published: 2021-12-07 – Updated: 2021-12-07 – View on bdu.fstec.ru Exploit exists Yes Fixed
VLAI
Title
Уязвимость операционной системы Juniper Networks Junos OS маршрутизаторов серии MX, связанная с недостаточной проверкой необычных или исключительных состояний, позволяющая нарушителю вызвать отказ в обслуживании
Summary
Уязвимость операционной системы Juniper Networks Junos OS маршрутизаторов серии MX связана с недостаточной проверкой необычных или исключительных состояний при обработке пакетов на MS-MPC/MS-MIC. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании
Class
Architecture vulnerability
Status
Confirmed by the vendor
Exploitation
Timing and state manipulation
Incidents
Yes
Remediation
Software update
CWE
  • CWE-754 - Недостаточная проверка необычных или исключительных состояний
Impacted products
Vendors
Juniper Networks Inc.
Products
JunOS
Versions
20.4R2 (JunOS), 20.2R3 (JunOS), 19.4R3-S2 (JunOS), 19.4R2-S4 (JunOS), 17.3R3-S11 (JunOS), 17.4R2-S13 (JunOS), от 17.4R3 до 17.4R3-S5 (JunOS), 18.1R3-S12 (JunOS), 18.2R2-S8 (JunOS), 18.2R3-S7 (JunOS), 18.2R3-S8 (JunOS), 18.3R3-S4 (JunOS), 18.4R3-S7 (JunOS), 19.1R3-S4 (JunOS), 19.1R3-S5 (JunOS), 19.2R1-S6 (JunOS), 19.3R3-S2 (JunOS), 19.4R2-S5 (JunOS), 20.1R2-S1 (JunOS), 20.2R2-S2 (JunOS), 20.2R2-S3 (JunOS), 20.3R2 (JunOS), 20.3R2-S1 (JunOS), 20.4R1 (JunOS), 20.4R1-S1 (JunOS), 21.1R1 (JunOS)
Product types
Operating system
Platforms
Juniper Networks Inc. JunOS 20.4R2 Juniper MX Series, Juniper Networks Inc. JunOS 20.2R3 Juniper MX Series, Juniper Networks Inc. JunOS 19.4R3-S2 Juniper MX Series, Juniper Networks Inc. JunOS 19.4R2-S4 Juniper MX Series, Juniper Networks Inc. JunOS 17.3R3-S11 Juniper MX Series, Juniper Networks Inc. JunOS 17.4R2-S13 Juniper MX Series, Juniper Networks Inc. JunOS от 17.4R3 до 17.4R3-S5 Juniper MX Series, Juniper Networks Inc. JunOS 18.1R3-S12 Juniper MX Series, Juniper Networks Inc. JunOS 18.2R2-S8 Juniper MX Series, Juniper Networks Inc. JunOS 18.2R3-S7 Juniper MX Series, Juniper Networks Inc. JunOS 18.2R3-S8 Juniper MX Series, Juniper Networks Inc. JunOS 18.3R3-S4 Juniper MX Series, Juniper Networks Inc. JunOS 18.4R3-S7 Juniper MX Series, Juniper Networks Inc. JunOS 19.1R3-S4 Juniper MX Series, Juniper Networks Inc. JunOS 19.1R3-S5 Juniper MX Series, Juniper Networks Inc. JunOS 19.2R1-S6 Juniper MX Series, Juniper Networks Inc. JunOS 19.3R3-S2 Juniper MX Series, Juniper Networks Inc. JunOS 19.4R2-S5 Juniper MX Series, Juniper Networks Inc. JunOS 20.1R2-S1 Juniper MX Series, Juniper Networks Inc. JunOS 20.2R2-S2 Juniper MX Series, Juniper Networks Inc. JunOS 20.2R2-S3 Juniper MX Series, Juniper Networks Inc. JunOS 20.3R2 Juniper MX Series, Juniper Networks Inc. JunOS 20.3R2-S1 Juniper MX Series, Juniper Networks Inc. JunOS 20.4R1 Juniper MX Series, Juniper Networks Inc. JunOS 20.4R1-S1 Juniper MX Series, Juniper Networks Inc. JunOS 21.1R1 Juniper MX Series
Mitigations
Использование рекомендаций: https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11216

{
  "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:U/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": "Juniper Networks Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "20.4R2 (JunOS), 20.2R3 (JunOS), 19.4R3-S2 (JunOS), 19.4R2-S4 (JunOS), 17.3R3-S11 (JunOS), 17.4R2-S13 (JunOS), \u043e\u0442 17.4R3 \u0434\u043e 17.4R3-S5 (JunOS), 18.1R3-S12 (JunOS), 18.2R2-S8 (JunOS), 18.2R3-S7 (JunOS), 18.2R3-S8 (JunOS), 18.3R3-S4 (JunOS), 18.4R3-S7 (JunOS), 19.1R3-S4 (JunOS), 19.1R3-S5 (JunOS), 19.2R1-S6 (JunOS), 19.3R3-S2 (JunOS), 19.4R2-S5 (JunOS), 20.1R2-S1 (JunOS), 20.2R2-S2 (JunOS), 20.2R2-S3 (JunOS), 20.3R2 (JunOS), 20.3R2-S1 (JunOS), 20.4R1 (JunOS), 20.4R1-S1 (JunOS), 21.1R1 (JunOS)",
  "\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://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA11216",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "13.10.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "07.12.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "07.12.2021",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2021-05906",
  "\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-2021-31351, JSA ID:11216",
  "\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 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "JunOS",
  "\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": "Juniper Networks Inc. JunOS 20.4R2 Juniper MX Series, Juniper Networks Inc. JunOS 20.2R3 Juniper MX Series, Juniper Networks Inc. JunOS 19.4R3-S2 Juniper MX Series, Juniper Networks Inc. JunOS 19.4R2-S4 Juniper MX Series, Juniper Networks Inc. JunOS 17.3R3-S11 Juniper MX Series, Juniper Networks Inc. JunOS 17.4R2-S13 Juniper MX Series, Juniper Networks Inc. JunOS \u043e\u0442 17.4R3 \u0434\u043e 17.4R3-S5 Juniper MX Series, Juniper Networks Inc. JunOS 18.1R3-S12 Juniper MX Series, Juniper Networks Inc. JunOS 18.2R2-S8 Juniper MX Series, Juniper Networks Inc. JunOS 18.2R3-S7 Juniper MX Series, Juniper Networks Inc. JunOS 18.2R3-S8 Juniper MX Series, Juniper Networks Inc. JunOS 18.3R3-S4 Juniper MX Series, Juniper Networks Inc. JunOS 18.4R3-S7 Juniper MX Series, Juniper Networks Inc. JunOS 19.1R3-S4 Juniper MX Series, Juniper Networks Inc. JunOS 19.1R3-S5 Juniper MX Series, Juniper Networks Inc. JunOS 19.2R1-S6 Juniper MX Series, Juniper Networks Inc. JunOS 19.3R3-S2 Juniper MX Series, Juniper Networks Inc. JunOS 19.4R2-S5 Juniper MX Series, Juniper Networks Inc. JunOS 20.1R2-S1 Juniper MX Series, Juniper Networks Inc. JunOS 20.2R2-S2 Juniper MX Series, Juniper Networks Inc. JunOS 20.2R2-S3 Juniper MX Series, Juniper Networks Inc. JunOS 20.3R2 Juniper MX Series, Juniper Networks Inc. JunOS 20.3R2-S1 Juniper MX Series, Juniper Networks Inc. JunOS 20.4R1 Juniper MX Series, Juniper Networks Inc. JunOS 20.4R1-S1 Juniper MX Series, Juniper Networks Inc. JunOS 21.1R1 Juniper MX 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 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Juniper Networks Junos OS \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 \u0441\u0435\u0440\u0438\u0438 MX, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u043d\u0435\u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u0438\u043b\u0438 \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439, \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": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043d\u0435\u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u0438\u043b\u0438 \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439 (CWE-754)",
  "\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 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Juniper Networks Junos OS \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 \u0441\u0435\u0440\u0438\u0438 MX \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u043d\u0435\u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u0438\u043b\u0438 \u0438\u0441\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0439 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u043d\u0430 MS-MPC/MS-MIC. \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\u0435\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": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430",
  "\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://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA11216\nhttps://safe-surf.ru/upload/VULN/VULN-20211119.9.pdf",
  "\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-754",
  "\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 7,5)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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Detection rules are retrieved from Rulezet.

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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.


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