An Improper Handling of Unexpected Data Type vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker with low privileges to cause a Denial of Service (DoS). Continued execution of this command might cause a sustained Denial of Service condition.
 

If BGP rib sharding is configured and a certain CLI command is executed the rpd process can crash. During the rpd crash and restart, the routing protocols might be impacted and traffic disruption might be seen due to the loss of routing information.
 

This issue affects:

Juniper Networks Junos OS

• 20.3 versions prior to 20.3R3-S1;
• 20.4 versions prior to 20.4R3;
• 21.1 versions prior to 21.1R3;
• 21.2 versions prior to 21.2R2.

Juniper Networks Junos OS Evolved

• 20.4 versions prior to 20.4R3-EVO;
• 21.1 versions prior to 21.1R3-EVO;
• 21.2 versions prior to 21.2R2-EVO.

This issue does not affect:

Juniper Networks Junos OS versions prior to 20.3R1.

Juniper Networks Junos OS Evolved versions prior to 20.3R1-EVO.
 

To be affected by this issue BGP rib sharing needs to be configured:

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-2022-22193.

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

Junos OS Evolved: 20.4R3-EVO, 21.1R3-EVO, 21.2R2-EVO, 21.3R1-EVO, and all subsequent releases;

Junos OS: 20.3R3-S1, 20.4R3, 21.1R3, 21.2R2, 21.3R1, and all subsequent releases.

This issue is being tracked as PR 1600866 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-2022-22193 at cve.mitre.org