CVE-2024-39517: Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in devices with EVPN/VXLAN configured
First published: Wed 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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | <21.4R3-S7 | |
| Juniper JUNOS | <22.1R3-S5 | |
| Juniper JUNOS | <22.2R3-S3 | |
| Juniper JUNOS | <22.3R3-S3 | |
| Juniper JUNOS | <22.4R3-S2 | |
| Juniper JUNOS | <23.2R2 | |
| Juniper JUNOS | <23.4R1-S1 | |
| Juniper Networks Junos OS | <21.4R3-S7-EVO | |
| Juniper Networks Junos OS | <22.1R3-S5-EVO | |
| Juniper Networks Junos OS | <22.2R3-S3-EVO | |
| Juniper Networks Junos OS | <22.3R3-S3-EVO | |
| Juniper Networks Junos OS | <22.4R3-S2-EVO | |
| Juniper Networks Junos OS | <23.2R2-EVO | |
| Juniper Networks Junos OS | <23.4R1-S1-EVO | |
| Juniper Networks Junos OS | <23.4R2-EVO | |
| Junos OS Evolved | <21.4 | |
| Junos OS Evolved | =21.4 | |
| Junos OS Evolved | =21.4-r1 | |
| Junos OS Evolved | =21.4-r1-s1 | |
| Junos OS Evolved | =21.4-r1-s2 | |
| Junos OS Evolved | =21.4-r2 | |
| Junos OS Evolved | =21.4-r2-s1 | |
| Junos OS Evolved | =21.4-r2-s2 | |
| Junos OS Evolved | =21.4-r3 | |
| Junos OS Evolved | =21.4-r3-s1 | |
| Junos OS Evolved | =21.4-r3-s2 | |
| Junos OS Evolved | =21.4-r3-s3 | |
| Junos OS Evolved | =21.4-r3-s4 | |
| Junos OS Evolved | =21.4-r3-s5 | |
| Junos OS Evolved | =21.4-r3-s6 | |
| Junos OS Evolved | =22.1 | |
| Junos OS Evolved | =22.1-r1 | |
| Junos OS Evolved | =22.1-r1-s1 | |
| Junos OS Evolved | =22.1-r1-s2 | |
| Junos OS Evolved | =22.1-r2 | |
| Junos OS Evolved | =22.1-r2-s1 | |
| Junos OS Evolved | =22.1-r2-s2 | |
| Junos OS Evolved | =22.1-r3 | |
| Junos OS Evolved | =22.1-r3-s1 | |
| Junos OS Evolved | =22.1-r3-s2 | |
| Junos OS Evolved | =22.1-r3-s3 | |
| Junos OS Evolved | =22.1-r3-s4 | |
| Junos OS Evolved | =22.2 | |
| Junos OS Evolved | =22.2-r1 | |
| Junos OS Evolved | =22.2-r1-s1 | |
| Junos OS Evolved | =22.2-r1-s2 | |
| Junos OS Evolved | =22.2-r2 | |
| Junos OS Evolved | =22.2-r2-s1 | |
| Junos OS Evolved | =22.2-r2-s2 | |
| Junos OS Evolved | =22.2-r3 | |
| Junos OS Evolved | =22.2-r3-s1 | |
| Junos OS Evolved | =22.2-r3-s2 | |
| Junos OS Evolved | =22.3 | |
| Junos OS Evolved | =22.3-r1 | |
| Junos OS Evolved | =22.3-r1-s1 | |
| Junos OS Evolved | =22.3-r1-s2 | |
| Junos OS Evolved | =22.3-r2 | |
| Junos OS Evolved | =22.3-r2-s1 | |
| Junos OS Evolved | =22.3-r2-s2 | |
| Junos OS Evolved | =22.3-r3 | |
| Junos OS Evolved | =22.3-r3-s1 | |
| Junos OS Evolved | =22.3-r3-s2 | |
| Junos OS Evolved | =22.4 | |
| Junos OS Evolved | =22.4-r1 | |
| Junos OS Evolved | =22.4-r1-s1 | |
| Junos OS Evolved | =22.4-r1-s2 | |
| Junos OS Evolved | =22.4-r2 | |
| Junos OS Evolved | =22.4-r2-s1 | |
| Junos OS Evolved | =22.4-r2-s2 | |
| Junos OS Evolved | =22.4-r3 | |
| Junos OS Evolved | =22.4-r3-s1 | |
| Junos OS Evolved | =23.2 | |
| Junos OS Evolved | =23.2-r1 | |
| Junos OS Evolved | =23.2-r1-s1 | |
| Junos OS Evolved | =23.2-r1-s2 | |
| Junos OS Evolved | =23.4 | |
| Junos OS Evolved | =23.4-r1 | |
| 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-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 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-39517?
The severity of CVE-2024-39517 is classified as a Denial of Service (DoS) vulnerability.
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.
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.
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.
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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