Juniper Networks Releases Urgent Junos OS Updates for High-Severity Flaws

Juniper Networks Releases Urgent Junos OS Updates for High-Severity Flaws

Juniper Networks has released out-of-band updates to address high-severity flaws in SRX Series and EX Series that could be exploited by a threat actor to take control of susceptible systems.

The vulnerabilities, tracked as CVE-2024-21619 and CVE-2024-21620, are rooted in the J-Web component and impact all versions of Junos OS. Two other shortcomings, CVE-2023-36846 and CVE-2023-36851, were previously disclosed by the company in August 2023.

  • CVE-2024-21619 (CVSS score: 5.3) – A missing authentication vulnerability that could lead to exposure of sensitive configuration information
  • CVE-2024-21620 (CVSS score: 8.8) – A cross-site scripting (XSS) vulnerability that could lead to the execution of arbitrary commands with the target’s permissions by means of a specially crafted request

Cybersecurity firm watchTowr Labs has been credited with discovering and reporting the issues. The two vulnerabilities have been addressed in the following versions –

  • CVE-2024-21619 – 20.4R3-S9, 21.2R3-S7, 21.3R3-S5, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3, 23.2R1-S2, 23.2R2, 23.4R1, and all subsequent releases
  • CVE-2024-21620 – 20.4R3-S10, 21.2R3-S8, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3-S1, 23.2R2, 23.4R2, and all subsequent releases

Earlier this month, Juniper Networks also shipped fixes to contain a critical vulnerability in the same products (CVE-2024-21591, CVSS score: 9.8) that could enable an attacker to cause a denial-of-service (DoS) or remote code execution and obtain root privileges on the devices.