CVE-2021-31350 (GCVE-0-2021-31350)

Vulnerability from cvelistv5 – Published: 2021-10-19 18:16 – Updated: 2024-09-16 18:49
VLAI?
Summary
An Improper Privilege Management vulnerability in the gRPC framework, used by the Juniper Extension Toolkit (JET) API on Juniper Networks Junos OS and Junos OS Evolved, allows a network-based, low-privileged authenticated attacker to perform operations as root, leading to complete compromise of the targeted system. The issue is caused by the JET service daemon (jsd) process authenticating the user, then passing configuration operations directly to the management daemon (mgd) process, which runs as root. This issue affects Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO.
CWE
  • CWE-269 - Improper Privilege Management
Assigner
References
https://kb.juniper.net/JSA11215 x_refsource_CONFIRM
Impacted products
Vendor Product Version
Juniper Networks Junos OS Unaffected: unspecified , < 18.4R1 (custom)
Affected: 18.4 , < 18.4R1-S8, 18.4R2-S8, 18.4R3-S8 (custom)
Affected: 19.1 , < 19.1R2-S3, 19.1R3-S5 (custom)
Affected: 19.2 , < 19.2R1-S7, 19.2R3-S2 (custom)
Affected: 19.3 , < 19.3R2-S6, 19.3R3-S2 (custom)
Affected: 19.4 , < 19.4R1-S4, 19.4R2-S4, 19.4R3-S3 (custom)
Affected: 20.1 , < 20.1R2-S2, 20.1R3 (custom)
Affected: 20.2 , < 20.2R2-S3, 20.2R3 (custom)
Affected: 20.3 , < 20.3R2-S1, 20.3R3 (custom)
Affected: 20.4 , < 20.4R2 (custom)
Create a notification for this product.
    Juniper Networks Junos OS Evolved Affected: unspecified , < 20.4R2-EVO (custom)
Affected: 21.1-EVO , < 21.1R2-EVO (custom)
Create a notification for this product.
Show details on NVD website

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      "descriptions": "[{\"lang\": \"en\", \"value\": \"An Improper Privilege Management vulnerability in the gRPC framework, used by the Juniper Extension Toolkit (JET) API on Juniper Networks Junos OS and Junos OS Evolved, allows a network-based, low-privileged authenticated attacker to perform operations as root, leading to complete compromise of the targeted system. The issue is caused by the JET service daemon (jsd) process authenticating the user, then passing configuration operations directly to the management daemon (mgd) process, which runs as root. This issue affects Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO.\"}, {\"lang\": \"es\", \"value\": \"Una vulnerabilidad de administraci\\u00f3n de privilegios inapropiada en el marco gRPC, usado por la API de Juniper Extension Toolkit (JET) en Juniper Networks Junos OS y Junos OS Evolved, permite a un atacante autenticado poco privilegiado basado en la red llevar a cabo operaciones como root, conllevando a un compromiso completo del sistema objetivo. El problema est\\u00e1 causado por el proceso del demonio de servicio JET (jsd) autenticando al usuario y luego pasa las operaciones de configuraci\\u00f3n directamente al proceso del demonio de administraci\\u00f3n (mgd), que se ejecuta como root. Este problema afecta a Juniper Networks Junos OS versiones: versiones 18.4 anteriores a 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; versiones 19.1 anteriores a 19.1R2-S3, 19.1R3-S5; versiones 19.2 anteriores a 19.2R1-S7, 19.2R3-S2; versiones 19.3 anteriores a 19.3R2-S6, 19.3R3-S2; 19. 4 versiones anteriores a 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3; versiones 20.2 anteriores a 20.2R2-S3, 20.2R3; versiones 20.3 anteriores a 20.3R2-S1, 20.3R3; versiones 20.4 anteriores a 20.4R2. Este problema no afecta a las versiones de Juniper Networks Junos OS anteriores a 18.4R1. Juniper Networks Junos OS Evolved: Todas las versiones anteriores a 20.4R2-EVO; versiones 21.1-EVO anteriores a 21.1R2-EVO\"}]",
      "id": "CVE-2021-31350",
      "lastModified": "2024-11-21T06:05:28.517",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"sirt@juniper.net\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.6, \"impactScore\": 5.9}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:S/C:C/I:C/A:C\", \"baseScore\": 9.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"SINGLE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 8.0, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-10-19T19:15:08.537",
      "references": "[{\"url\": \"https://kb.juniper.net/JSA11215\", \"source\": \"sirt@juniper.net\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://kb.juniper.net/JSA11215\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}]",
      "sourceIdentifier": "sirt@juniper.net",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"sirt@juniper.net\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-269\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-269\"}]}]"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-31350\",\"sourceIdentifier\":\"sirt@juniper.net\",\"published\":\"2021-10-19T19:15:08.537\",\"lastModified\":\"2024-11-21T06:05:28.517\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An Improper Privilege Management vulnerability in the gRPC framework, used by the Juniper Extension Toolkit (JET) API on Juniper Networks Junos OS and Junos OS Evolved, allows a network-based, low-privileged authenticated attacker to perform operations as root, leading to complete compromise of the targeted system. The issue is caused by the JET service daemon (jsd) process authenticating the user, then passing configuration operations directly to the management daemon (mgd) process, which runs as root. This issue affects Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de administraci\u00f3n de privilegios inapropiada en el marco gRPC, usado por la API de Juniper Extension Toolkit (JET) en Juniper Networks Junos OS y Junos OS Evolved, permite a un atacante autenticado poco privilegiado basado en la red llevar a cabo operaciones como root, conllevando a un compromiso completo del sistema objetivo. El problema est\u00e1 causado por el proceso del demonio de servicio JET (jsd) autenticando al usuario y luego pasa las operaciones de configuraci\u00f3n directamente al proceso del demonio de administraci\u00f3n (mgd), que se ejecuta como root. Este problema afecta a Juniper Networks Junos OS versiones: versiones 18.4 anteriores a 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; versiones 19.1 anteriores a 19.1R2-S3, 19.1R3-S5; versiones 19.2 anteriores a 19.2R1-S7, 19.2R3-S2; versiones 19.3 anteriores a 19.3R2-S6, 19.3R3-S2; 19. 4 versiones anteriores a 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3; versiones 20.2 anteriores a 20.2R2-S3, 20.2R3; versiones 20.3 anteriores a 20.3R2-S1, 20.3R3; versiones 20.4 anteriores a 20.4R2. Este problema no afecta a las versiones de Juniper Networks Junos OS anteriores a 18.4R1. Juniper Networks Junos OS Evolved: Todas las versiones anteriores a 20.4R2-EVO; versiones 21.1-EVO anteriores a 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Advisory\"]},{\"url\":\"https://kb.juniper.net/JSA11215\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}"
  }
}


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Sightings

Author Source Type Date

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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