CVE-2017-2348 Junos OS: jdhcpd daemon crash due to invalid IPv6 UDP packets

High 7.5 Published 14 Jul 2017 Updated 16 Sep 2024

An attacker can cause a denial of service in Junos OS by sending invalid IPv6 UDP packets, crashing the jdhcpd daemon and interrupting DHCP services.

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-2017-2348?

CVE-2017-2348 is a high-severity denial of service vulnerability in Juniper Junos, published on 14 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Juniper Enhanced jdhcpd daemon may experience high CPU utilization, or crash and restart upon receipt of an invalid IPv6 UDP packet. Both high CPU utilization and repeated crashes of the jdhcpd daemon can result in a denial of service as DHCP service is interrupted. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS 14.1X53 prior to 14.1X53-D12, 14.1X53-D38, 14.1X53-D40 on QFX, EX, QFabric System; 15.1 prior to 15.1F2-S18, 15.1R4 on all products and platforms; 15.1X49 prior to 15.1X49-D80 on SRX; 15.1X53 prior to 15.1X53-D51, 15.1X53-D60 on NFX, QFX, EX.

Weakness: CWE-400

Which versions are affected by CVE-2017-2348?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2017-2348?

No fix has been published for CVE-2017-2348 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-2017-2348 being exploited?

There is no known exploitation of CVE-2017-2348 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-3vv6-22qm-hgwq.