CVE-2018-0027 Junos OS: Receipt of malformed RSVP packet may lead to RPD denial of service

High 7.5 Published 11 Jul 2018 Updated 17 Sep 2024

A remote attacker can cause a denial of service in Junos OS by sending malformed RSVP packets, leading to network outages if RSVP 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-2018-0027?

CVE-2018-0027 is a high-severity denial of service vulnerability in Juniper Junos, published on 11 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Receipt of a crafted or malformed RSVP PATH message may cause the routing protocol daemon (RPD) to hang or crash. When RPD is unavailable, routing updates cannot be processed which can lead to an extended network outage. If RSVP is not enabled on an interface, then the issue cannot be triggered via that interface. This issue only affects Juniper Networks Junos OS 16.1 versions prior to 16.1R3. This issue does not affect Junos releases prior to 16.1R1.

Weakness: CWE-20

Which versions are affected by CVE-2018-0027?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2018-0027?

No fix has been published for CVE-2018-0027 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-2018-0027 being exploited?

There is no known exploitation of CVE-2018-0027 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-mg8q-9fc7-9gjp.