CVE-2024-39519: Junos OS Evolved: ACX 7000 Series: Multicast traffic is looped in a multihoming EVPN MPLS scenario
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-39519?
CVE-2024-39519 has a severity rating that allows an unauthenticated attacker to exploit it and cause a Denial-of-Service (DoS).
How do I fix CVE-2024-39519?
To fix CVE-2024-39519, update your Junos OS Evolved software to a version that is not affected by this vulnerability.
Which versions of Junos OS Evolved are affected by CVE-2024-39519?
CVE-2024-39519 affects Junos OS Evolved versions 22.2 to 22.4, including specific releases within that range.
What platforms are impacted by CVE-2024-39519?
CVE-2024-39519 primarily impacts the ACX7000 Series platforms running the vulnerable versions of Junos OS Evolved.
Can CVE-2024-39519 be exploited remotely?
No, CVE-2024-39519 requires an adjacent attacker to exploit the vulnerability.