CVE-2023-22407

Junos OS and Junos OS Evolved: An RPD crash can happen due to an MPLS TE tunnel configuration change on a directly connected router

Description

An Incomplete Cleanup vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS). An rpd crash can occur when an MPLS TE tunnel configuration change occurs on a directly connected router. This issue affects: Juniper Networks Junos OS All versions prior to 18.4R2-S7; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2. Juniper Networks Junos OS Evolved All versions prior to 19.2R3-EVO; 19.3 versions prior to 19.3R3-EVO; 19.4 versions prior to 19.4R3-EVO; 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R2-EVO.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: Junos OS: 18.4R2-S7, 19.1R3-S2, 19.2R3, 19.3R3, 19.4R3, 20.1R2, 20.2R2, 20.3R1, and all subsequent releases. Junos OS Evolved: 19.2R3-EVO, 19.3R3-EVO, 19.4R3-EVO, 20.1R3-EVO, 20.2R2-EVO, 20.3R1-EVO, and all subsequent releases.

Workaround:

  • Remove 'protocols rsvp interface link-protection max-bypasses'.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
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/JSA70203 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-22407?
CVE-2023-22407 has been scored as a medium severity vulnerability.
How to fix CVE-2023-22407?
To fix CVE-2023-22407: The following software releases have been updated to resolve this specific issue: Junos OS: 18.4R2-S7, 19.1R3-S2, 19.2R3, 19.3R3, 19.4R3, 20.1R2, 20.2R2, 20.3R1, and all subsequent releases. Junos OS Evolved: 19.2R3-EVO, 19.3R3-EVO, 19.4R3-EVO, 20.1R3-EVO, 20.2R2-EVO, 20.3R1-EVO, and all subsequent releases.
Is CVE-2023-22407 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-22407 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-2023-22407?
CVE-2023-22407 affects Juniper Networks Junos OS, Juniper Networks Junos OS Evolved.
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