CVSS 3.1 Score 5.3 of 10 (medium)


Published Oct 11, 2023
Updated: Feb 21, 2024
CWE ID 367


CVE-2023-44188 is a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Juniper Networks Junos OS that allows a network-based authenticated attacker to flood the system with multiple telemetry requests, leading to a Denial of Service (DoS) by crashing the Junos Kernel Debugging Streaming Daemon (jkdsd) process. This vulnerability affects all Junos platforms and is triggered when multiple telemetry requests come from different collectors. As the load increases, the Dynamic Rendering Daemon (drend) defers processing, causing a timing issue that accesses stale memory and crashes the jkdsd process. The affected versions range from 20.4 to 23.2 of Junos OS, excluding versions prior to 19.4R1. Organizations should update their Junos OS to versions that are not vulnerable to mitigate the risk of this DoS attack.

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