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JuniperVULNRICHMENT:CVE-2024-39530

HistoryJul 11, 2024 - 4:04 p.m.

CVE-2024-39530 Junos OS: Attempting to access specific sensors on platforms not supporting these will lead to a chassisd crash

2024-07-1116:04:13

CWE-754

juniper

github.com

junos os

unauthenticated

chassisd

crash

dos

grpc

netconf

sensor

vulnerability

denial-of-service

juniper networks

fpcs

outage

cve-2024-39530

22.1r3-s4

22.3r2-s2

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

CVSS4

8.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:L

AI Score

Confidence

High

EPSS

0.001

Percentile

17.7%

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis management daemon (chassisd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a

Denial-of-Service (DoS).

If an attempt is made to access specific sensors on platforms not supporting these sensors, either via GRPC or netconf, chassisd will crash and restart leading to a restart of all FPCs and thereby a complete outage.

This issue affects Junos OS:

21.4 versions from 21.4R3 before 21.4R3-S5,
22.1 versions from 22.1R3 before 22.1R3-S4,
22.2 versions from 22.2R2 before 22.2R3,
22.3 versions from 22.3R1 before 22.3R2-S2, 22.3R3,
22.4 versions from 22.4R1 before 22.4R2.

This issue does not affect Junos OS versions earlier than 21.4.

CNA Affected

[
  {
    "vendor": "Juniper Networks",
    "product": "Junos OS",
    "versions": [
      {
        "status": "affected",
        "version": "21.4R3",
        "lessThan": "21.4R3-S5",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.1R3",
        "lessThan": "22.1R3-S4",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.2R2",
        "lessThan": "22.2R3",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.3R1",
        "lessThan": "22.3R2-S2, 22.3R3",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.4R1",
        "lessThan": "22.4R2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "21.4",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:o:juniper:junos_os:*:*:*:*:*:*:*:*"
    ],
    "vendor": "juniper",
    "product": "junos_os",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "21.4",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.4r1",
        "lessThan": "22.4r2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.3r1",
        "lessThan": "22.3r2-s2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.3r1",
        "lessThan": "22.3r3",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "22.2r2",
        "lessThan": "22.2r3",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "22.1r3",
        "lessThan": "22.1r3-s4",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "21.4r3",
        "lessThan": "21.4r3-s5",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unknown"
  }
]

References

supportportal.juniper.net/JSA82989

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

CVSS4

8.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:L

AI Score

Confidence

High

EPSS

0.001

Percentile

17.7%

SSVC

Exploitation

none

Automatable

yes

Technical Impact

partial

JSON

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