An Operation on a Resource after Expiration or Release vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker with an established BGP session to cause a Denial of Service (DoS).

This issue occurs when proxy-generate route-target filtering is enabled, and certain proxy-route add and delete events are happening.

This issue affects:

Juniper Networks Junos OS

• All versions prior to 17.3R3-S11;
• 17.4 versions prior to 17.4R2-S13, 17.4R3-S4;
• 18.3 versions prior to 18.3R3-S4;
• 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S6;
• 19.1 versions prior to 19.1R3-S4;
• 19.2 versions prior to 19.2R1-S6, 19.2R3-S2;
• 19.3 versions prior to 19.3R2-S6, 19.3R3-S1;
• 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3;
• 20.1 versions prior to 20.1R2;
• 20.2 versions prior to 20.2R2;
• 20.3 versions prior to 20.3R1-S2, 20.3R2.

Juniper Networks Junos OS Evolved

• All versions prior to 20.1R3;
• 20.2 versions prior to 20.2R3;
• 20.3 versions prior to 20.3R2.

Only configurations configured with proxy-generate route-target filtering are affected:

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
 

This issue was found during internal product security testing or research.
 

This issue has been assigned CVE-2022-22197.

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

Junos OS: 17.3R3-S11, 17.4R2-S13, 17.4R3-S4, 18.3R3-S4, 18.4R1-S8, 18.4R2-S8, 18.4R3-S6, 19.1R3-S4, 19.2R1-S6, 19.2R3-S2, 19.3R2-S6, 19.3R3-S1, 19.4R1-S4, 19.4R2-S4, 19.4R3, 20.1R2, 20.2R2, 20.3R1-S2, 20.3R2, 20.4R1, and all subsequent releases.

Junos OS Evolved: 20.1R3, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases.
 

This issue is being tracked as PR 1525588 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).
 

Implementation:

Software Releases, patches and updates are available at https://support.juniper.net/support/downloads/

• 2022-04-13: Initial Publication.

• 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
• CVE-2022-22197 at cve.mitre.org