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cveJuniperCVE-2021-31350
HistoryOct 19, 2021 - 7:15 p.m.

CVE-2021-31350

2021-10-1919:15:08
CWE-269
juniper
web.nvd.nist.gov
42
cve-2021-31350
improper privilege management
grpc framework
juniper extension toolkit
jet api
juniper networks
junos os
junos os evolved
vulnerability
security
nvd
cve

CVSS2

9

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.4

Confidence

High

EPSS

0.001

Percentile

42.8%

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.

Affected configurations

Nvd
Node
juniperjunosMatch18.4-
OR
juniperjunosMatch18.4r1
OR
juniperjunosMatch18.4r1-s1
OR
juniperjunosMatch18.4r1-s2
OR
juniperjunosMatch18.4r1-s3
OR
juniperjunosMatch18.4r1-s4
OR
juniperjunosMatch18.4r1-s5
OR
juniperjunosMatch18.4r1-s6
OR
juniperjunosMatch18.4r1-s7
OR
juniperjunosMatch18.4r2-s8
OR
juniperjunosMatch18.4r3-s8
OR
juniperjunosMatch19.1-
OR
juniperjunosMatch19.1r1
OR
juniperjunosMatch19.1r1-s1
OR
juniperjunosMatch19.1r1-s2
OR
juniperjunosMatch19.1r1-s3
OR
juniperjunosMatch19.1r1-s4
OR
juniperjunosMatch19.1r1-s5
OR
juniperjunosMatch19.1r1-s6
OR
juniperjunosMatch19.1r2
OR
juniperjunosMatch19.1r2-s1
OR
juniperjunosMatch19.1r2-s2
OR
juniperjunosMatch19.1r3-s5
OR
juniperjunosMatch19.2-
OR
juniperjunosMatch19.2r1
OR
juniperjunosMatch19.2r1-s1
OR
juniperjunosMatch19.2r1-s2
OR
juniperjunosMatch19.2r1-s3
OR
juniperjunosMatch19.2r1-s4
OR
juniperjunosMatch19.2r1-s5
OR
juniperjunosMatch19.2r1-s6
OR
juniperjunosMatch19.2r3-s2
OR
juniperjunosMatch19.3-
OR
juniperjunosMatch19.3r1
OR
juniperjunosMatch19.3r1-s1
OR
juniperjunosMatch19.3r2
OR
juniperjunosMatch19.3r2-s1
OR
juniperjunosMatch19.3r2-s2
OR
juniperjunosMatch19.3r2-s3
OR
juniperjunosMatch19.3r2-s4
OR
juniperjunosMatch19.3r2-s5
OR
juniperjunosMatch19.3r3-s2
OR
juniperjunosMatch19.4r1
OR
juniperjunosMatch19.4r1-s1
OR
juniperjunosMatch19.4r1-s2
OR
juniperjunosMatch19.4r1-s3
OR
juniperjunosMatch19.4r2-s4
OR
juniperjunosMatch19.4r3-s3
OR
juniperjunosMatch20.1r1
OR
juniperjunosMatch20.1r1-s1
OR
juniperjunosMatch20.1r1-s2
OR
juniperjunosMatch20.1r1-s3
OR
juniperjunosMatch20.1r1-s4
OR
juniperjunosMatch20.1r2
OR
juniperjunosMatch20.1r2-s1
OR
juniperjunosMatch20.1r3
OR
juniperjunosMatch20.2r1
OR
juniperjunosMatch20.2r1-s1
OR
juniperjunosMatch20.2r1-s2
OR
juniperjunosMatch20.2r1-s3
OR
juniperjunosMatch20.2r2
OR
juniperjunosMatch20.2r2-s1
OR
juniperjunosMatch20.2r2-s2
OR
juniperjunosMatch20.2r3
OR
juniperjunosMatch20.3r1
OR
juniperjunosMatch20.3r1-s1
OR
juniperjunosMatch20.3r2
OR
juniperjunosMatch20.3r3
OR
juniperjunosMatch20.4r1
OR
juniperjunosMatch20.4r1-s1
OR
juniperjunos_os_evolvedMatch18.3r1
OR
juniperjunos_os_evolvedMatch19.1r1
OR
juniperjunos_os_evolvedMatch19.1r2
OR
juniperjunos_os_evolvedMatch19.2r1
OR
juniperjunos_os_evolvedMatch19.2r2
OR
juniperjunos_os_evolvedMatch19.3r1
OR
juniperjunos_os_evolvedMatch19.3r2
OR
juniperjunos_os_evolvedMatch19.4r1
OR
juniperjunos_os_evolvedMatch19.4r1-s1
OR
juniperjunos_os_evolvedMatch20.1r1
OR
juniperjunos_os_evolvedMatch20.1r1-s1
OR
juniperjunos_os_evolvedMatch20.1r2
OR
juniperjunos_os_evolvedMatch20.1r2-s1
OR
juniperjunos_os_evolvedMatch20.1r2-s2
OR
juniperjunos_os_evolvedMatch20.2r1
OR
juniperjunos_os_evolvedMatch20.2r1-s1
OR
juniperjunos_os_evolvedMatch20.2r2
OR
juniperjunos_os_evolvedMatch20.3r1
OR
juniperjunos_os_evolvedMatch20.3r1-s1
OR
juniperjunos_os_evolvedMatch20.3r2
OR
juniperjunos_os_evolvedMatch20.4r1
OR
juniperjunos_os_evolvedMatch21.1
OR
juniperjunos_os_evolvedMatch21.1r1-s1
VendorProductVersionCPE
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:*
juniperjunos18.4cpe:2.3:o:juniper:junos:18.4:r2-s8:*:*:*:*:*:*
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CNA Affected

[
  {
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "18.4R1",
        "status": "unaffected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "18.4R1-S8, 18.4R2-S8, 18.4R3-S8",
        "status": "affected",
        "version": "18.4",
        "versionType": "custom"
      },
      {
        "lessThan": "19.1R2-S3, 19.1R3-S5",
        "status": "affected",
        "version": "19.1",
        "versionType": "custom"
      },
      {
        "lessThan": "19.2R1-S7, 19.2R3-S2",
        "status": "affected",
        "version": "19.2",
        "versionType": "custom"
      },
      {
        "lessThan": "19.3R2-S6, 19.3R3-S2",
        "status": "affected",
        "version": "19.3",
        "versionType": "custom"
      },
      {
        "lessThan": "19.4R1-S4, 19.4R2-S4, 19.4R3-S3",
        "status": "affected",
        "version": "19.4",
        "versionType": "custom"
      },
      {
        "lessThan": "20.1R2-S2, 20.1R3",
        "status": "affected",
        "version": "20.1",
        "versionType": "custom"
      },
      {
        "lessThan": "20.2R2-S3, 20.2R3",
        "status": "affected",
        "version": "20.2",
        "versionType": "custom"
      },
      {
        "lessThan": "20.3R2-S1, 20.3R3",
        "status": "affected",
        "version": "20.3",
        "versionType": "custom"
      },
      {
        "lessThan": "20.4R2",
        "status": "affected",
        "version": "20.4",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "20.4R2-EVO",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "21.1R2-EVO",
        "status": "affected",
        "version": "21.1-EVO",
        "versionType": "custom"
      }
    ]
  }
]

CVSS2

9

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.4

Confidence

High

EPSS

0.001

Percentile

42.8%

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