CVE-2024-39517: Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in devices with EVPN/VXLAN configured

Published Jul 10, 2024
·
Updated

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).

In an EVPN/VXLAN scenario, when a high amount specific Layer 2 packets are processed by the device, it can cause the Routing Protocol Daemon (rpd) to utilize all CPU resources which causes the device to hang. A manual restart of the rpd is required to restore services.

This issue affects both IPv4 and IPv6 implementations. This issue affects Junos OS: All versions earlier than 21.4R3-S7; 22.1 versions earlier than 22.1R3-S5; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S3; 22.4 versions earlier than 22.4R3-S2; 23.2 versions earlier than 23.2R2; 23.4 versions earlier than 23.4R1-S1.

Junos OS Evolved: All versions earlier than 21.4R3-S7-EVO; 22.1-EVO versions earlier than 22.1R3-S5-EVO; 22.2-EVO versions earlier than 22.2R3-S3-EVO; 22.3-EVO versions earlier than 22.3R3-S3-EVO; 22.4-EVO versions earlier than 22.4R3-S2-EVO; 23.2-EVO versions earlier than 23.2R2-EVO; 23.4-EVO versions earlier than 23.4R1-S1-EVO, 23.4R2-EVO.

Affected Software

138 affected components
Juniper Networks Junos OS<21.4R3-S7
Juniper Networks Junos OS<22.1R3-S5
Juniper Networks Junos OS<22.2R3-S3
Juniper Networks Junos OS<22.3R3-S3
Juniper Networks Junos OS<22.4R3-S2
Juniper Networks Junos OS<23.2R2
Juniper Networks Junos OS<23.4R1-S1
Juniper Networks Junos OS Evolved<21.4R3-S7-EVO
Juniper Networks Junos OS Evolved<22.1R3-S5-EVO
Juniper Networks Junos OS Evolved<22.2R3-S3-EVO
Juniper Networks Junos OS Evolved<22.3R3-S3-EVO
Juniper Networks Junos OS Evolved<22.4R3-S2-EVO
Juniper Networks Junos OS Evolved<23.2R2-EVO
Juniper Networks Junos OS Evolved<23.4R1-S1-EVO
Juniper Networks Junos OS Evolved<23.4R2-EVO
Juniper JUNOS<21.4
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=21.4-r3
Juniper JUNOS=21.4-r3-s1
Juniper JUNOS=21.4-r3-s2
Juniper JUNOS=21.4-r3-s3
Juniper JUNOS=21.4-r3-s4
Juniper JUNOS=21.4-r3-s5
Juniper JUNOS=21.4-r3-s6
Juniper JUNOS=22.1
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=22.1-r3
Juniper JUNOS=22.1-r3-s1
Juniper JUNOS=22.1-r3-s2
Juniper JUNOS=22.1-r3-s3
Juniper JUNOS=22.1-r3-s4
Juniper JUNOS=22.2
Juniper JUNOS=22.2-r1
Juniper JUNOS=22.2-r1-s1
Juniper JUNOS=22.2-r1-s2
Juniper JUNOS=22.2-r2
Juniper JUNOS=22.2-r2-s1
Juniper JUNOS=22.2-r2-s2
Juniper JUNOS=22.2-r3
Juniper JUNOS=22.2-r3-s1
Juniper JUNOS=22.2-r3-s2
Juniper JUNOS=22.3
Juniper JUNOS=22.3-r1
Juniper JUNOS=22.3-r1-s1
Juniper JUNOS=22.3-r1-s2
Juniper JUNOS=22.3-r2
Juniper JUNOS=22.3-r2-s1
Juniper JUNOS=22.3-r2-s2
Juniper JUNOS=22.3-r3
Juniper JUNOS=22.3-r3-s1
Juniper JUNOS=22.3-r3-s2
Juniper JUNOS=22.4
Juniper JUNOS=22.4-r1
Juniper JUNOS=22.4-r1-s1
Juniper JUNOS=22.4-r1-s2
Juniper JUNOS=22.4-r2
Juniper JUNOS=22.4-r2-s1
Juniper JUNOS=22.4-r2-s2
Juniper JUNOS=22.4-r3
Juniper JUNOS=22.4-r3-s1
Juniper JUNOS=23.2
Juniper JUNOS=23.2-r1
Juniper JUNOS=23.2-r1-s1
Juniper JUNOS=23.2-r1-s2
Juniper JUNOS=23.4
Juniper JUNOS=23.4-r1
Juniper Junos OS Evolved<21.4
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=21.4-r3
Juniper Junos OS Evolved=21.4-r3-s1
Juniper Junos OS Evolved=21.4-r3-s2
Juniper Junos OS Evolved=21.4-r3-s3
Juniper Junos OS Evolved=21.4-r3-s4
Juniper Junos OS Evolved=21.4-r3-s5
Juniper Junos OS Evolved=21.4-r3-s6
Juniper Junos OS Evolved=22.1
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=22.1-r3
Juniper Junos OS Evolved=22.1-r3-s1
Juniper Junos OS Evolved=22.1-r3-s2
Juniper Junos OS Evolved=22.1-r3-s3
Juniper Junos OS Evolved=22.1-r3-s4
Juniper Junos OS Evolved=22.2
Juniper Junos OS Evolved=22.2-r1
Juniper Junos OS Evolved=22.2-r1-s1
Juniper Junos OS Evolved=22.2-r1-s2
Juniper Junos OS Evolved=22.2-r2
Juniper Junos OS Evolved=22.2-r2-s1
Juniper Junos OS Evolved=22.2-r2-s2
Juniper Junos OS Evolved=22.2-r3
Juniper Junos OS Evolved=22.2-r3-s1
Juniper Junos OS Evolved=22.2-r3-s2
Juniper Junos OS Evolved=22.3
Juniper Junos OS Evolved=22.3-r1
Juniper Junos OS Evolved=22.3-r1-s1
Juniper Junos OS Evolved=22.3-r1-s2
Juniper Junos OS Evolved=22.3-r2
Juniper Junos OS Evolved=22.3-r2-s1
Juniper Junos OS Evolved=22.3-r2-s2
Juniper Junos OS Evolved=22.3-r3
Juniper Junos OS Evolved=22.3-r3-s1
Juniper Junos OS Evolved=22.3-r3-s2
Juniper Junos OS Evolved=22.4
Juniper Junos OS Evolved=22.4-r1
Juniper Junos OS Evolved=22.4-r1-s1
Juniper Junos OS Evolved=22.4-r1-s2
Juniper Junos OS Evolved=22.4-r2
Juniper Junos OS Evolved=22.4-r2-s1
Juniper Junos OS Evolved=22.4-r2-s2
Juniper Junos OS Evolved=22.4-r3
Juniper Junos OS Evolved=22.4-r3-s1
Juniper Junos OS Evolved=23.2
Juniper Junos OS Evolved=23.2-r1
Juniper Junos OS Evolved=23.2-r1-s1
Juniper Junos OS Evolved=23.2-r1-s2
Juniper Junos OS Evolved=23.4
Juniper Junos OS Evolved=23.4-r1

Event History

Jul 10, 2024
CVE Published
via MITRE·11:06 PM
Data Sourced
via MITRE·11:06 PM
DescriptionSeverity
Data Sourced
via NVD·11:15 PM
DescriptionSeverityWeakness

Frequently Asked Questions

1

What is the severity of CVE-2024-39517?

The severity of CVE-2024-39517 is classified as a Denial of Service (DoS) vulnerability.

2

How does CVE-2024-39517 affect Juniper Networks products?

CVE-2024-39517 allows an unauthenticated adjacent attacker to cause Denial of Service on affected Juniper Networks products.

3

How can I fix CVE-2024-39517?

To mitigate CVE-2024-39517, you should update to the latest versions of Junos OS or Junos OS Evolved that address the vulnerability.

4

Which versions of Junos OS are affected by CVE-2024-39517?

CVE-2024-39517 affects Junos OS versions prior to 21.4R3-S7 and versions earlier than 23.4-R1-S1.

5

Is Junos OS Evolved affected by CVE-2024-39517?

Yes, Junos OS Evolved versions prior to 21.4R3-S7-EVO and earlier than 23.4-R1-S1-EVO are affected by CVE-2024-39517.

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