CVE-2024-39548 Junos OS Evolved: Receipt of specific packets in the aftmand process will lead to a memory leak
Unauthenticated attackers can cause a memory leak in the aftmand process, leading to a denial of service requiring manual restarts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-39548?
CVE-2024-39548 is a high-severity denial of service vulnerability in Juniper Junos Os Evolved, published on 11 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An Uncontrolled Resource Consumption vulnerability in the aftmand process of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to consume memory resources, resulting in a Denial of Service (DoS) condition. The processes do not recover on their own and must be manually restarted.
This issue affects both IPv4 and IPv6.
Changes in memory usage can be monitored using the following CLI command: user@device> show system memory node <fpc slot> | grep evo-aftmann This issue affects Junos OS Evolved:
* All versions before 21.2R3-S8-EVO, * 21.3 versions before 21.3R3-S5-EVO, * 21.4 versions before 21.4R3-S5-EVO, * 22.1 versions before 22.1R3-S4-EVO, * 22.2 versions before 22.2R3-S4-EVO, * 22.3 versions before 22.3R3-S3-EVO, * 22.4 versions before 22.4R2-S2-EVO, 22.4R3-EVO, * 23.2 versions before 23.2R1-S1-EVO, 23.2R2-EVO.
Weakness: CWE-400
Which versions are affected by CVE-2024-39548?
It affects 1 product.
Products include Juniper Junos Os Evolved.
How do I fix CVE-2024-39548?
No fix has been published for CVE-2024-39548 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-39548 being exploited?
There is no known exploitation of CVE-2024-39548 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos Os Evolved
- CVE-2026-21902 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root
- CVE-2023-28983 Junos OS Evolved: Shell Injection vulnerability in the gNOI server
- CVE-2025-21599 Denial of service in Junos OS Evolved
- CVE-2024-47502 Junos OS Evolved: TCP session state is not always cleared on the Routing Engine leading to DoS
- CVE-2024-39531 Junos OS Evolved: ACX 7000 Series: Protocol specific DDoS configuration affects other protocols
Sources
Also known as GHSA-v47j-c7r7-829c.