An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS).

This issue is applicable to all platforms that run iked. 

This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350: 
 

• All versions before 21.2R3-S8, 
• from 21.4 before 21.4R3-S7, 
• from 22.1 before 22.1R3-S2, 
• from 22.2 before 22.2R3-S1, 
• from 22.3 before 22.3R2-S1, 22.3R3, 
• from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.

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

Junos OS: 21.2R3-S8, 21.4R3-S7, 22.1R3-S2, 22.2R3-S1, 22.3R2-S1, 22.3R3, 22.4R1-S2, 22.4R2, 22.4R3, 23.2R1, and all subsequent releases.

This issue is being tracked as 1716092 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).

There are no known workarounds for this issue.

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