CVE-2024-47503 Junos OS: SRX4600 and SRX5000 Series: Sequence of specific PIM packets causes a flowd crash
An unauthenticated attacker can cause a flowd crash and service interruption on Juniper SRX devices by sending specific PIM packets in a multicast scenario.
- 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-2024-47503?
CVE-2024-47503 is a high-severity denial of service vulnerability in Juniper Junos, published on 11 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
* All versions before 21.4R3-S9, * 22.2 versions before 22.2R3-S5, * 22.3 versions before 22.3R3-S4, * 22.4 versions before 22.4R3-S4, * 23.2 versions before 23.2R2-S2, * 23.4 versions before 23.4R2, * 24.2 versions before 24.2R1-S1, 24.2R2.
Weakness: CWE-754
Which versions are affected by CVE-2024-47503?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2024-47503?
No fix has been published for CVE-2024-47503 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-2024-47503 being exploited?
There is no known exploitation of CVE-2024-47503 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos
- CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification
- CVE-2020-1631 Juniper Junos OS Path Traversal
- CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization
- CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function
- CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification
Sources
Also known as GHSA-8c3g-6qh9-4p9q.