CVE-2024-39519

published 2024-07-11

CVE-2024-39519: An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX7000…

Priority P4 30 medium 6.5 CVSS 3.1

AV A AC L PR N UI N S U C N I N A H

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX7000 Series allows an unauthenticated, adjacent attacker to cause a

Denial-of-Service (DoS).

On all ACX 7000 Series platforms running

Junos OS Evolved, and configured with IRBs, if a Customer Edge device (CE) device is dual homed to two Provider Edge devices (PE) a traffic loop will occur when the CE sends multicast packets. This issue can be triggered by IPv4 and IPv6 traffic.

This issue affects Junos OS Evolved:

All versions from 22.2R1-EVO and later versions before 22.4R2-EVO,

This issue does not affect Junos OS Evolved versions before 22.1R1-EVO.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
juniper	junos_os	—	—
juniper	junos_os_evolved	—	—
juniper	junos_os_evolved	>= 22.2 < 22.4	22.4
juniper_networks	junos_os_evolved	—	—
juniper_networks	junos_os_evolved	—	—
juniper_networks	junos_os_evolved	—	—
juniper_networks	junos_os_evolved	>= 22.4-EVO < 22.4R2-EVO	22.4R2-EVO

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 7.1 HIGH CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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CWE-754