6.5 - CVE-2024-39517

Executive Summary

Informations
Name	CVE-2024-39517	First vendor Publication	2024-07-10
Vendor	Cve	Last vendor Modification	2024-07-11

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score	6.5
Base Score	6.5	Environmental Score	6.5
impact SubScore	3.6	Temporal Score	6.5
Exploitabality Sub Score	2.8

Attack Vector	Adjacent	Attack Complexity	Low
Privileges Required	None	User Interaction	None
Scope	Unchanged	Confidentiality Impact	None
Integrity Impact	None	Availability Impact	High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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.