CVE-2019-0068 Junos OS: SRX Series: Denial of Service vulnerability in flowd due to multicast packets
An attacker can cause a sustained denial of service on Juniper SRX devices by sending specific multicast packets that crash the flowd process.
- 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-2019-0068?
CVE-2019-0068 is a medium-severity denial of service vulnerability in Juniper Junos, published on 9 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The SRX flowd process, responsible for packet forwarding, may crash and restart when processing specific multicast packets. By continuously sending the specific multicast packets, an attacker can repeatedly crash the flowd process causing a sustained Denial of Service. This issue affects Juniper Networks Junos OS on SRX Series: 12.3X48 versions prior to 12.3X48-D90; 15.1X49 versions prior to 15.1X49-D180; 17.3 versions; 17.4 versions prior to 17.4R2-S5, 17.4R3; 18.1 versions prior to 18.1R3-S6; 18.2 versions prior to 18.2R2-S4, 18.2R3; 18.3 versions prior to 18.3R2-S1, 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S1, 19.1R2.
Weakness: CWE-754
Which versions are affected by CVE-2019-0068?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2019-0068?
No fix has been published for CVE-2019-0068 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-2019-0068 being exploited?
There is no known exploitation of CVE-2019-0068 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-wf66-qg8f-m4r9.