CVE-2017-10619 Junos: SRX cluster denial of service vulnerability in flowd due to multicast packets

High 7.5 Published 13 Oct 2017 Updated 16 Sep 2024

Attackers can cause a denial of service on Juniper SRX firewalls by sending multicast packets when Express Path is enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2017-10619?

CVE-2017-10619 is a high-severity denial of service vulnerability in Juniper Junos, published on 13 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

When Express Path (formerly known as service offloading) is configured on Juniper Networks SRX1400, SRX3400, SRX3600, SRX5400, SRX5600, SRX5800 in high availability cluster configuration mode, certain multicast packets might cause the flowd process to crash, halting or interrupting traffic from flowing through the device and triggering RG1+ (data-plane) fail-over to the secondary node. Repeated crashes of the flowd process may constitute an extended denial of service condition. This service is not enabled by default and is only supported in high-end SRX platforms. Affected releases are Juniper Networks Junos OS 12.3X48 prior to 12.3X48-D45, 15.1X49 prior to 15.1X49-D80 on SRX1400, SRX3400, SRX3600, SRX5400, SRX5600, SRX5800.

Which versions are affected by CVE-2017-10619?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2017-10619?

No fix has been published for CVE-2017-10619 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-2017-10619 being exploited?

There is no known exploitation of CVE-2017-10619 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-7x82-gf29-pfxv.