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JuniperCVE-2021-31372

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

CVE-2021-31372

2021-10-1919:15:10

CWE-20

juniper

web.nvd.nist.gov

cve-2021-31372

improper input validation

j-web

juniper networks

junos os

privilege escalation

security vulnerability

nvd

CVSS2

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

8.6

Confidence

High

EPSS

0.001

Percentile

40.4%

JSON

An Improper Input Validation vulnerability in J-Web of Juniper Networks Junos OS allows a locally authenticated J-Web attacker to escalate their privileges to root over the target device. This issue affects: Juniper Networks Junos OS All versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2;

Affected configurations

Nvd

Node

juniperjunosRange≤18.2

juniperjunosMatch18.3-

juniperjunosMatch18.3r1

juniperjunosMatch18.3r1-s1

juniperjunosMatch18.3r1-s2

juniperjunosMatch18.3r1-s3

juniperjunosMatch18.3r1-s4

juniperjunosMatch18.3r1-s5

juniperjunosMatch18.3r1-s6

juniperjunosMatch18.3r2

juniperjunosMatch18.3r2-s1

juniperjunosMatch18.3r2-s2

juniperjunosMatch18.3r2-s3

juniperjunosMatch18.3r2-s4

juniperjunosMatch18.3r3

juniperjunosMatch18.3r3-s1

juniperjunosMatch18.3r3-s2

juniperjunosMatch18.3r3-s3

juniperjunosMatch18.3r3-s4

juniperjunosMatch18.4-

juniperjunosMatch18.4r1

juniperjunosMatch18.4r1-s1

juniperjunosMatch18.4r1-s2

juniperjunosMatch18.4r1-s3

juniperjunosMatch18.4r1-s4

juniperjunosMatch18.4r1-s5

juniperjunosMatch18.4r1-s6

juniperjunosMatch18.4r1-s7

juniperjunosMatch18.4r2

juniperjunosMatch18.4r2-s1

juniperjunosMatch18.4r2-s2

juniperjunosMatch18.4r2-s3

juniperjunosMatch18.4r2-s4

juniperjunosMatch18.4r2-s5

juniperjunosMatch18.4r2-s6

juniperjunosMatch18.4r2-s7

juniperjunosMatch18.4r2-s8

juniperjunosMatch18.4r3

juniperjunosMatch18.4r3-s1

juniperjunosMatch18.4r3-s2

juniperjunosMatch18.4r3-s3

juniperjunosMatch18.4r3-s4

juniperjunosMatch18.4r3-s5

juniperjunosMatch18.4r3-s6

juniperjunosMatch18.4r3-s7

juniperjunosMatch18.4r3-s8

juniperjunosMatch19.1-

juniperjunosMatch19.1r1

juniperjunosMatch19.1r1-s1

juniperjunosMatch19.1r1-s2

juniperjunosMatch19.1r1-s3

juniperjunosMatch19.1r1-s4

juniperjunosMatch19.1r1-s5

juniperjunosMatch19.1r1-s6

juniperjunosMatch19.1r2

juniperjunosMatch19.1r2-s1

juniperjunosMatch19.1r2-s2

juniperjunosMatch19.1r3

juniperjunosMatch19.1r3-s1

juniperjunosMatch19.1r3-s2

juniperjunosMatch19.1r3-s3

juniperjunosMatch19.1r3-s4

juniperjunosMatch19.1r3-s5

juniperjunosMatch19.2-

juniperjunosMatch19.2r1

juniperjunosMatch19.2r1-s1

juniperjunosMatch19.2r1-s2

juniperjunosMatch19.2r1-s3

juniperjunosMatch19.2r1-s4

juniperjunosMatch19.2r1-s5

juniperjunosMatch19.2r1-s6

juniperjunosMatch19.2r2

juniperjunosMatch19.2r2-s1

juniperjunosMatch19.2r3

juniperjunosMatch19.2r3-s1

juniperjunosMatch19.2r3-s2

juniperjunosMatch19.3-

juniperjunosMatch19.3r1

juniperjunosMatch19.3r1-s1

juniperjunosMatch19.3r2

juniperjunosMatch19.3r2-s1

juniperjunosMatch19.3r2-s2

juniperjunosMatch19.3r2-s3

juniperjunosMatch19.3r2-s4

juniperjunosMatch19.3r2-s5

juniperjunosMatch19.3r3

juniperjunosMatch19.3r3-s1

juniperjunosMatch19.3r3-s2

juniperjunosMatch19.4r1

juniperjunosMatch19.4r1-s1

juniperjunosMatch19.4r1-s2

juniperjunosMatch19.4r1-s3

juniperjunosMatch19.4r2

juniperjunosMatch19.4r2-s1

juniperjunosMatch19.4r2-s2

juniperjunosMatch19.4r2-s3

juniperjunosMatch19.4r3

juniperjunosMatch19.4r3-s1

juniperjunosMatch19.4r3-s2

juniperjunosMatch19.4r3-s3

juniperjunosMatch19.4r3-s4

juniperjunosMatch20.1r1

juniperjunosMatch20.1r1-s1

juniperjunosMatch20.1r1-s2

juniperjunosMatch20.1r1-s3

juniperjunosMatch20.1r1-s4

juniperjunosMatch20.1r2

juniperjunosMatch20.1r2-s1

juniperjunosMatch20.1r2-s2

juniperjunosMatch20.1r3

juniperjunosMatch20.2r1

juniperjunosMatch20.2r1-s1

juniperjunosMatch20.2r1-s2

juniperjunosMatch20.2r1-s3

juniperjunosMatch20.2r2

juniperjunosMatch20.2r2-s1

juniperjunosMatch20.2r2-s2

juniperjunosMatch20.2r2-s3

juniperjunosMatch20.2r3

juniperjunosMatch20.2r3-s1

juniperjunosMatch20.3r1

juniperjunosMatch20.3r1-s1

juniperjunosMatch20.3r2

juniperjunosMatch20.3r2-s1

juniperjunosMatch20.3r3

juniperjunosMatch20.4r1

juniperjunosMatch20.4r1-s1

juniperjunosMatch20.4r2

juniperjunosMatch20.4r2-s1

juniperjunosMatch21.1r1

juniperjunosMatch21.1r1-s1

juniperjunosMatch21.2r1

VendorProductVersionCPE
juniperjunos*cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1-s4:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:*
juniperjunos18.3cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:*

Vendor	Product	Version	CPE
juniper	junos	*	cpe:2.3:o:juniper:junos::::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:-::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1-s1::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1-s2::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1-s3::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1-s4::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1-s5::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r1-s6::::::
juniper	junos	18.3	cpe:2.3:o:juniper:junos:18.3:r2::::::

Rows per page:

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CNA Affected

[
  {
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "18.3R3-S5",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "18.4R3-S9",
        "status": "affected",
        "version": "18.4",
        "versionType": "custom"
      },
      {
        "lessThan": "19.1R3-S6",
        "status": "affected",
        "version": "19.1",
        "versionType": "custom"
      },
      {
        "lessThan": "19.2R3-S3",
        "status": "affected",
        "version": "19.2",
        "versionType": "custom"
      },
      {
        "lessThan": "19.3R3-S3",
        "status": "affected",
        "version": "19.3",
        "versionType": "custom"
      },
      {
        "lessThan": "19.4R3-S5",
        "status": "affected",
        "version": "19.4",
        "versionType": "custom"
      },
      {
        "lessThan": "20.1R3-S1",
        "status": "affected",
        "version": "20.1",
        "versionType": "custom"
      },
      {
        "lessThan": "20.2R3-S2",
        "status": "affected",
        "version": "20.2",
        "versionType": "custom"
      },
      {
        "lessThan": "20.3R3-S1",
        "status": "affected",
        "version": "20.3",
        "versionType": "custom"
      },
      {
        "lessThan": "20.4R3",
        "status": "affected",
        "version": "20.4",
        "versionType": "custom"
      },
      {
        "lessThan": "21.1R2, 21.1R3",
        "status": "affected",
        "version": "21.1",
        "versionType": "custom"
      },
      {
        "lessThan": "21.2R1-S1, 21.2R2",
        "status": "affected",
        "version": "21.2",
        "versionType": "custom"
      }
    ]
  }
]

References

kb.juniper.net/JSA11237

CVSS2

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

8.6

Confidence

High

EPSS

0.001

Percentile

40.4%

JSON

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