medium
5.5
CWE
241
Advisory Published
Updated

CVE-2022-22193: Junos OS and Junos OS Evolved: In a BGP rib-sharding scenario when a certain CLI command is executed the rpd process might crash

First published: Wed Apr 13 2022(Updated: )

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.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS=20.3-r1
Juniper JUNOS=20.3-r1-s1
Juniper JUNOS=20.3-r2
Juniper JUNOS=20.3-r2-s1
Juniper JUNOS=20.3-r3
Juniper JUNOS=20.4-r1
Juniper JUNOS=20.4-r1-s1
Juniper JUNOS=20.4-r2
Juniper JUNOS=20.4-r2-s1
Juniper JUNOS=21.1-r1
Juniper JUNOS=21.1-r1-s1
Juniper JUNOS=21.1-r2
Juniper JUNOS=21.1-r2-s1
Juniper JUNOS=21.1-r2-s2
Juniper JUNOS=21.2-r1
Juniper JUNOS=21.2-r1-s1
Juniper JUNOS=21.2-r1-s2
Juniper Junos Os Evolved=20.4-r1
Juniper Junos Os Evolved=20.4-r1-s1
Juniper Junos Os Evolved=20.4-r1-s2
Juniper Junos Os Evolved=20.4-r2
Juniper Junos Os Evolved=20.4-r2-s1
Juniper Junos Os Evolved=20.4-r2-s2
Juniper Junos Os Evolved=20.4-r2-s3
Juniper Junos Os Evolved=21.1-r1
Juniper Junos Os Evolved=21.1-r1-s1
Juniper Junos Os Evolved=21.1-r2
Juniper Junos Os Evolved=21.2-r1
Juniper Junos Os Evolved=21.2-r1-s1
Juniper Junos Os Evolved=21.2-r1-s2

Remedy

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.

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2022-22193.

  • What is the severity level of CVE-2022-22193?

    The severity level of CVE-2022-22193 is rated as medium with a CVSS score of 5.5.

  • How can an attacker exploit CVE-2022-22193?

    A locally authenticated attacker with low privileges can exploit this vulnerability to cause a Denial of Service (DoS) by handling unexpected data type in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved.

  • Is there a fix available for CVE-2022-22193?

    Yes, it is recommended to follow the guidance provided by Juniper Networks in their security advisory (JSA69503) to address this vulnerability.

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