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JuniperCVELIST:CVE-2023-44188

HistoryOct 11, 2023 - 8:55 p.m.

CVE-2023-44188 Junos OS: jkdsd crash due to multiple telemetry requests

2023-10-1120:55:03

CWE-367

juniper

www.cve.org

juniper networks junos os

toctou race condition

denial of service

jkdsd

telemetry requests

dynamic rendering daemon

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.3

Confidence

High

EPSS

0.001

Percentile

21.8%

JSON

A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in telemetry processing of Juniper Networks Junos OS allows a network-based authenticated attacker to flood the system with multiple telemetry requests, causing the Junos Kernel Debugging Streaming Daemon (jkdsd) process to crash, leading to a Denial of Service (DoS). Continued receipt and processing of telemetry requests will repeatedly crash the jkdsd process and sustain the Denial of Service (DoS) condition.

This issue is seen on all Junos platforms. The crash is triggered when multiple telemetry requests come from different collectors. As the load increases, the Dynamic Rendering Daemon (drend) decides to defer processing and continue later, which results in a timing issue accessing stale memory, causing the jkdsd process to crash and restart.

Note: jkdsd is not shipped with SRX Series devices and therefore are not affected by this vulnerability.
This issue affects:

Juniper Networks Junos OS:

20.4 versions prior to 20.4R3-S9;
21.1 versions 21.1R1 and later;
21.2 versions prior to 21.2R3-S6;
21.3 versions prior to 21.3R3-S5;
21.4 versions prior to 21.4R3-S5;
22.1 versions prior to 22.1R3-S4;
22.2 versions prior to 22.2R3-S2;
22.3 versions prior to 22.3R2-S1, 22.3R3-S1;
22.4 versions prior to 22.4R2-S2, 22.4R3;
23.1 versions prior to 23.1R2.

This issue does not affect Juniper Networks Junos OS versions prior to 19.4R1.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "NFX Series",
      "EX Series",
      "QFX Series",
      "ACX Series",
      "MX Series",
      "PTX Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "19.4R1",
        "status": "unaffected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "20.4R3-S9",
        "status": "affected",
        "version": "20.4",
        "versionType": "semver"
      },
      {
        "lessThan": "21.1*",
        "status": "affected",
        "version": "21.1R1",
        "versionType": "semver"
      },
      {
        "lessThan": "21.2R3-S6",
        "status": "affected",
        "version": "21.2",
        "versionType": "semver"
      },
      {
        "lessThan": "21.3R3-S5",
        "status": "affected",
        "version": "21.3",
        "versionType": "semver"
      },
      {
        "lessThan": "21.4R3-S5",
        "status": "affected",
        "version": "21.4",
        "versionType": "semver"
      },
      {
        "lessThan": "22.1R3-S4",
        "status": "affected",
        "version": "22.1",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2R3-S2",
        "status": "affected",
        "version": "22.2",
        "versionType": "semver"
      },
      {
        "lessThan": "22.3R2-S1, 22.3R3-S1",
        "status": "affected",
        "version": "22.3",
        "versionType": "semver"
      },
      {
        "lessThan": "22.4R2-S2, 22.4R3",
        "status": "affected",
        "version": "22.4",
        "versionType": "semver"
      },
      {
        "lessThan": "23.1R2",
        "status": "affected",
        "version": "23.1",
        "versionType": "semver"
      }
    ]
  }
]

References

supportportal.juniper.net/JSA73152

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.3

Confidence

High

EPSS

0.001

Percentile

21.8%

JSON

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