CVE-2023-44188— Junos OS: jkdsd crash due to multiple telemetry requests
Quick assessment
Affected
Juniper Networks Junos OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Juniper Networks Junos OS是美国Juniper Networks公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。ecto是elixir-ecto开源的一个用于数据映射和语言集成查询的工具包。 Juniper Networks Junos OS存在安全漏洞。攻击者利用该漏洞导致系统崩溃。
Possible ATT&CK Techniques 3 AI
T1135 · Network Share Discovery T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-44188
Vulnerability Information
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Vulnerability Title
Junos OS: jkdsd crash due to multiple telemetry requests
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国Juniper Networks公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。ecto是elixir-ecto开源的一个用于数据映射和语言集成查询的工具包。 Juniper Networks Junos OS存在安全漏洞。攻击者利用该漏洞导致系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Juniper Networks | Junos OS | 20.4 ~ 20.4R3-S9 | - |
|
II. Public POCs for CVE-2023-44188
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2023-44188 (1)
-
https://supportportal.juniper.net/JSA73152 vendor-advisory
Same Patch Batch · Juniper Networks · 2023-10-11 · 5 CVEs total
| CVE-2023-44186 | 7.5 HIGH | Junos OS and Junos OS Evolved: RPD crash when attempting to send a very long AS PATH to a |
| CVE-2023-44190 | 6.1 MEDIUM | Junos OS Evolved: PTX10001, PTX10004, PTX10008, PTX10016: MAC address validation bypass vu |
| CVE-2023-44189 | 6.1 MEDIUM | Junos OS Evolved: PTX10003 Series: MAC address validation bypass vulnerability |
| CVE-2023-44187 | 5.9 MEDIUM | Junos OS Evolved: 'file copy' CLI command can disclose password to shell users |
IV. Related Vulnerabilities
Same product: Junos OS
-
CVE-2026-57054
Junos OS: MX Series: Web filtering doesn't block specificall -
CVE-2026-57032
Junos OS: EX Series: Subscribing to an unsupported telemetry -
CVE-2026-57031
Junos OS: MX Series: For subscribers configured on static in -
CVE-2026-57030
Junos OS: SRX Series: Flow sessions are not getting cleared -
CVE-2026-57027
Junos OS: EX4100 Series, EX4400: With sFlow configured in a
Same vendor: Juniper Networks
-
CVE-2026-57054
Junos OS: MX Series: Web filtering doesn't block specificall -
CVE-2026-57032
Junos OS: EX Series: Subscribing to an unsupported telemetry -
CVE-2026-57031
Junos OS: MX Series: For subscribers configured on static in -
CVE-2026-57030
Junos OS: SRX Series: Flow sessions are not getting cleared -
CVE-2026-57029
Junos OS Evolved: QFX Series: When sFlow collector reachabil
Same weakness: CWE-367
V. Comments for CVE-2023-44188
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