Time-of-check Time-of-use (TOCTOU) Race Condition in Junos OS - CVE-2023-44188
Published: October 17, 2023
Vulnerability identifier: #VU82108
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-44188
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition in telemetry processing within the Junos Kernel Debugging Streaming Daemon (jkdsd) process. A remote authenticated user can flood the system with multiple telemetry requests and perform a denial of service (DoS) attack.
Affected software
Junos OS
How to mitigate CVE-2023-44188
Install updates from vendor's website.
Junos OS - addressed in versions 20.4R3-S9, 21.2R3-S6, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S1, 22.3R2-S2, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.1R2, 23.2R1, 23.2R2, 23.3R1