A Missing Authorization vulnerability in the Socket Intercept (SI) command file interface of Juniper Networks Junos OS Evolved allows an authenticated, low-privilege local attacker to modify certain files, allowing the attacker to cause any command to execute with root privileges leading to privilege escalation ultimately compromising the system. 
 

This issue affects Junos OS Evolved: 

• All versions prior to 21.2R3-S8-EVO, 
• 21.4 versions prior to  21.4R3-S6-EVO, 
• 22.1 versions prior to 22.1R3-S5-EVO, 
• 22.2 versions prior to 22.2R3-S3-EVO, 
• 22.3 versions prior to 22.3R3-S3-EVO, 
• 22.4 versions prior to 22.4R3-EVO, 
• 23.2 versions prior to 23.2R2-EVO.

The following software releases have been updated to resolve this specific issue:

Junos OS Evolved: 21.4R3-S6-EVO, 22.1R3-S5-EVO, 22.2R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.

This issue is being tracked as 1765498 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

2024-07-10: Initial Publication
2024-09-13: Minor formatting change to CVSS field

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team