CVE-2023-36840: Junos OS and Junos OS Evolved: An rpd crash occurs when a specific L2VPN command is run

Published Jul 14, 2023
·
Updated

A Reachable Assertion vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a locally-based, low-privileged attacker to cause a Denial of Service (DoS).

On all Junos OS and Junos OS Evolved, when a specific L2VPN command is run, RPD will crash and restart. Continued execution of this specific command will create a sustained Denial of Service (DoS) condition.

This issue affects: Juniper Networks Junos OS All versions prior to 19.3R3-S10; 20.1 versions prior to 20.1R3-S4; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R3; 22.2 versions prior to 22.2R2; 22.3 versions prior to 22.3R2;

Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S7-EVO; 21.1 versions prior to 21.1R3-S3-EVO; 21.2 versions prior to 21.2R3-S5-EVO; 21.3 versions prior to 21.3R3-S4-EVO; 21.4 versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO; 22.3 versions prior to 22.3R2-EVO;

Affected Software

204 affected components
Juniper JUNOS<19.3
Juniper JUNOS=19.3
Juniper JUNOS=19.3-r1
Juniper JUNOS=19.3-r1-s1
Juniper JUNOS=19.3-r2
Juniper JUNOS=19.3-r2-s1
Juniper JUNOS=19.3-r2-s2
Juniper JUNOS=19.3-r2-s3
Juniper JUNOS=19.3-r2-s4
Juniper JUNOS=19.3-r2-s5
Juniper JUNOS=19.3-r2-s6
Juniper JUNOS=19.3-r2-s7
Juniper JUNOS=19.3-r3
Juniper JUNOS=19.3-r3-s1
Juniper JUNOS=19.3-r3-s2
Juniper JUNOS=19.3-r3-s3
Juniper JUNOS=19.3-r3-s4
Juniper JUNOS=19.3-r3-s5
Juniper JUNOS=19.3-r3-s6
Juniper JUNOS=19.4
Juniper JUNOS=19.4-r1
Juniper JUNOS=19.4-r1-s1
Juniper JUNOS=19.4-r1-s2
Juniper JUNOS=19.4-r1-s3
Juniper JUNOS=19.4-r1-s4
Juniper JUNOS=19.4-r2
Juniper JUNOS=19.4-r2-s1
Juniper JUNOS=19.4-r2-s2
Juniper JUNOS=19.4-r2-s3
Juniper JUNOS=19.4-r2-s4
Juniper JUNOS=19.4-r2-s5
Juniper JUNOS=19.4-r2-s6
Juniper JUNOS=19.4-r2-s7
Juniper JUNOS=19.4-r3
Juniper JUNOS=19.4-r3-s1
Juniper JUNOS=19.4-r3-s2
Juniper JUNOS=19.4-r3-s3
Juniper JUNOS=19.4-r3-s4
Juniper JUNOS=19.4-r3-s5
Juniper JUNOS=19.4-r3-s6
Juniper JUNOS=19.4-r3-s7
Juniper JUNOS=19.4-r3-s8
Juniper JUNOS=19.4-r3-s9
Juniper JUNOS=20.1
Juniper JUNOS=20.1-r1
Juniper JUNOS=20.1-r1-s1
Juniper JUNOS=20.1-r1-s2
Juniper JUNOS=20.1-r1-s3
Juniper JUNOS=20.1-r1-s4
Juniper JUNOS=20.1-r2
Juniper JUNOS=20.1-r2-s1
Juniper JUNOS=20.1-r2-s2
Juniper JUNOS=20.1-r3
Juniper JUNOS=20.1-r3-s1
Juniper JUNOS=20.1-r3-s2
Juniper JUNOS=20.1-r3-s3
Juniper JUNOS=20.2
Juniper JUNOS=20.2-r1
Juniper JUNOS=20.2-r1-s1
Juniper JUNOS=20.2-r1-s2
Juniper JUNOS=20.2-r1-s3
Juniper JUNOS=20.2-r2
Juniper JUNOS=20.2-r2-s1
Juniper JUNOS=20.2-r2-s2
Juniper JUNOS=20.2-r2-s3
Juniper JUNOS=20.2-r3
Juniper JUNOS=20.2-r3-s1
Juniper JUNOS=20.2-r3-s2
Juniper JUNOS=20.2-r3-s3
Juniper JUNOS=20.2-r3-s4
Juniper JUNOS=20.2-r3-s5
Juniper JUNOS=20.3
Juniper JUNOS=20.3-r1
Juniper JUNOS=20.3-r1-s1
Juniper JUNOS=20.3-r1-s2
Juniper JUNOS=20.3-r2
Juniper JUNOS=20.3-r2-s1
Juniper JUNOS=20.3-r3
Juniper JUNOS=20.3-r3-s1
Juniper JUNOS=20.3-r3-s2
Juniper JUNOS=20.3-r3-s3
Juniper JUNOS=20.3-r3-s4
Juniper JUNOS=20.3-r3-s5
Juniper JUNOS=20.4
Juniper JUNOS=20.4-r1
Juniper JUNOS=20.4-r1-s1
Juniper JUNOS=20.4-r2
Juniper JUNOS=20.4-r2-s1
Juniper JUNOS=20.4-r2-s2
Juniper JUNOS=20.4-r3
Juniper JUNOS=20.4-r3-s1
Juniper JUNOS=20.4-r3-s2
Juniper JUNOS=20.4-r3-s3
Juniper JUNOS=20.4-r3-s4
Juniper JUNOS=21.1
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=21.1-r3
Juniper JUNOS=21.1-r3-s1
Juniper JUNOS=21.1-r3-s2
Juniper JUNOS=21.1-r3-s3
Juniper JUNOS=21.2
Juniper JUNOS=21.2-r1
Juniper JUNOS=21.2-r1-s1
Juniper JUNOS=21.2-r1-s2
Juniper JUNOS=21.2-r2
Juniper JUNOS=21.2-r2-s1
Juniper JUNOS=21.2-r2-s2
Juniper JUNOS=21.2-r3
Juniper JUNOS=21.2-r3-s1
Juniper JUNOS=21.2-r3-s2
Juniper JUNOS=21.3
Juniper JUNOS=21.3-r1
Juniper JUNOS=21.3-r1-s1
Juniper JUNOS=21.3-r1-s2
Juniper JUNOS=21.3-r2
Juniper JUNOS=21.3-r2-s1
Juniper JUNOS=21.3-r2-s2
Juniper JUNOS=21.3-r3
Juniper JUNOS=21.3-r3-s1
Juniper JUNOS=21.4
Juniper JUNOS=21.4-r1
Juniper JUNOS=21.4-r1-s1
Juniper JUNOS=21.4-r1-s2
Juniper JUNOS=21.4-r2
Juniper JUNOS=21.4-r2-s1
Juniper JUNOS=21.4-r2-s2
Juniper JUNOS=22.1-r1
Juniper JUNOS=22.1-r1-s1
Juniper JUNOS=22.1-r1-s2
Juniper JUNOS=22.1-r2
Juniper JUNOS=22.1-r2-s1
Juniper JUNOS=22.1-r2-s2
Juniper JUNOS=22.2-r1
Juniper JUNOS=22.2-r1-s1
Juniper JUNOS=22.2-r1-s2
Juniper JUNOS=22.3-r1
Juniper JUNOS=22.3-r1-s1
Juniper JUNOS=22.3-r1-s2
Juniper Junos OS Evolved<20.4
Juniper Junos OS Evolved=20.4
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=20.4-r3
Juniper Junos OS Evolved=20.4-r3-s1
Juniper Junos OS Evolved=20.4-r3-s2
Juniper Junos OS Evolved=20.4-r3-s3
Juniper Junos OS Evolved=20.4-r3-s4
Juniper Junos OS Evolved=20.4-r3-s5
Juniper Junos OS Evolved=20.4-r3-s6
Juniper Junos OS Evolved=21.1
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=21.1-r3
Juniper Junos OS Evolved=21.1-r3-s1
Juniper Junos OS Evolved=21.1-r3-s2
Juniper Junos OS Evolved=21.2
Juniper Junos OS Evolved=21.2-r1
Juniper Junos OS Evolved=21.2-r1-s1
Juniper Junos OS Evolved=21.2-r1-s2
Juniper Junos OS Evolved=21.2-r2
Juniper Junos OS Evolved=21.2-r2-s1
Juniper Junos OS Evolved=21.2-r2-s2
Juniper Junos OS Evolved=21.2-r3
Juniper Junos OS Evolved=21.2-r3-s1
Juniper Junos OS Evolved=21.2-r3-s2
Juniper Junos OS Evolved=21.2-r3-s3
Juniper Junos OS Evolved=21.2-r3-s4
Juniper Junos OS Evolved=21.3
Juniper Junos OS Evolved=21.3-r1
Juniper Junos OS Evolved=21.3-r1-s1
Juniper Junos OS Evolved=21.3-r2
Juniper Junos OS Evolved=21.3-r2-s1
Juniper Junos OS Evolved=21.3-r2-s2
Juniper Junos OS Evolved=21.3-r3
Juniper Junos OS Evolved=21.3-r3-s1
Juniper Junos OS Evolved=21.3-r3-s2
Juniper Junos OS Evolved=21.3-r3-s3
Juniper Junos OS Evolved=21.4
Juniper Junos OS Evolved=21.4-r1
Juniper Junos OS Evolved=21.4-r1-s1
Juniper Junos OS Evolved=21.4-r1-s2
Juniper Junos OS Evolved=21.4-r2
Juniper Junos OS Evolved=21.4-r2-s1
Juniper Junos OS Evolved=21.4-r2-s2
Juniper Junos OS Evolved=22.1-r1
Juniper Junos OS Evolved=22.1-r1-s1
Juniper Junos OS Evolved=22.1-r1-s2
Juniper Junos OS Evolved=22.1-r2
Juniper Junos OS Evolved=22.1-r2-s1
Juniper Junos OS Evolved=22.2-r1
Juniper Junos OS Evolved=22.2-r1-s1
Juniper Junos OS Evolved=22.3-r1
Juniper Junos OS Evolved=22.3-r1-s1
Juniper Junos OS Evolved=22.3-r1-s2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 20.1R3-S4
  2. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 20.2R3-S6
  3. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 20.3R3-S6
  4. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 20.4R3-S5
  5. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.1R3-S3-EVO
  6. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.1R3-S4
  7. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.2R3-S3
  8. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.2R3-S5-EVO
  9. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.3R3-S2
  10. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.3R3-S4-EVO
  11. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.4R3-EVO
  12. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 21.4R3
  13. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 22.1R3-EVO
  14. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 22.1R3
  15. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 22.2R2-EVO
  16. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 22.2R2
  17. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 22.3R2-EVO
  18. Upgrade

    Upgrade Juniper Networks Junos OS to a version that resolves this vulnerability.

    Fixed in 22.3R2
  19. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 20.1R3-S4
  20. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 20.2R3-S6
  21. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 20.3R3-S6
  22. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 20.4R3-S5
  23. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.1R3-S3-EVO
  24. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.1R3-S4
  25. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.2R3-S3
  26. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.2R3-S5-EVO
  27. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.3R3-S2
  28. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.3R3-S4-EVO
  29. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.4R3-EVO
  30. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 21.4R3
  31. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 22.1R3-EVO
  32. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 22.1R3
  33. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 22.2R2-EVO
  34. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 22.2R2
  35. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 22.3R2-EVO
  36. Upgrade

    Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.

    Fixed in 22.3R2

Event History

Jul 14, 2023
CVE Published
via MITRE·05:43 PM
Data Sourced
via MITRE·05:43 PM
RemedyDescriptionSeverityWeakness
Data Sourced
06:15 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-36840?

CVE-2023-36840 is classified as a medium severity vulnerability that can lead to a Denial of Service (DoS).

2

How do I fix CVE-2023-36840?

To fix CVE-2023-36840, upgrade Juniper Networks Junos OS or Junos OS Evolved to a version that addresses the vulnerability, as detailed in vendor documentation.

3

What versions of Junos OS are affected by CVE-2023-36840?

CVE-2023-36840 affects all versions of Junos OS and Junos OS Evolved prior to the remediation release.

4

Can CVE-2023-36840 be exploited remotely?

No, CVE-2023-36840 requires local access by a low-privileged attacker to exploit.

5

What types of attacks can CVE-2023-36840 enable?

CVE-2023-36840 can enable denial of service attacks, causing interruptions in network service availability.

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