An Out-of-bounds Read vulnerability in the advanced forwarding management process aftman of Juniper Networks Junos OS on MX Series with MPC10E, MPC11, MX10K-LC9600 line cards, MX304, and EX9200-15C, may allow an attacker to exploit a stack-based buffer overflow, leading to a reboot of the FPC.

Through code review, it was determined that the interface definition code for aftman could read beyond a buffer boundary, leading to a stack-based buffer overflow.

This issue affects Junos OS on MX Series and EX9200-15C:

• from 21.2 before 21.2R3-S1,
• from 21.4 before 21.4R3,
• from 22.1 before 22.1R2,
• from 22.2 before 22.2R2; 

This issue does not affect:

• All versions of Junos OS before 20.3R1;
• Any version of Junos OS 20.4.

The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S1, 21.4R3, 22.1R2, 22.2R2, 22.3R1, and all subsequent releases.

This issue is being tracked as 1670609 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).
 

2024-04-10 - 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
• supportportal.juniper.net/JSA79110 [juniper.net]
• https://www.cve.org/CVERecord?id=CVE-2024-30401