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

Description

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.

Remediation

Solution:

  • 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.

Workaround:

  • There are no viable workarounds for this issue.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA69503 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-22193?
CVE-2022-22193 has been scored as a medium severity vulnerability.
How to fix CVE-2022-22193?
To fix 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.
Is CVE-2022-22193 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-22193 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-22193?
CVE-2022-22193 affects Juniper Networks Junos OS, Juniper Networks Junos OS Evolved.
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