CVE-2018-0058 MX Series: In BBE configurations, receipt of a crafted IPv6 exception packet causes a Denial of Service

Medium 5.9 Published Updated

A crafted IPv6 packet causes a kernel crash and reboot on Juniper MX Series devices configured with BBE, requiring an OS upgrade.

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-2018-0058?

CVE-2018-0058 is a medium-severity denial of service vulnerability in Juniper Junos, published on 10 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Receipt of a specially crafted IPv6 exception packet may be able to trigger a kernel crash (vmcore), causing the device to reboot. The issue is specific to the processing of Broadband Edge (BBE) client route processing on MX Series subscriber management platforms, introduced by the Tomcat (Next Generation Subscriber Management) functionality in Junos OS 15.1. This issue affects no other platforms or configurations. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S2, 15.1R8 on MX Series; 16.1 versions prior to 16.1R4-S11, 16.1R7-S2, 16.1R8 on MX Series; 16.2 versions prior to 16.2R3 on MX Series; 17.1 versions prior to 17.1R2-S9, 17.1R3 on MX Series; 17.2 versions prior to 17.2R2-S6, 17.2R3 on MX Series; 17.3 versions prior to 17.3R2-S4, 17.3R3-S2, 17.3R4 on MX Series; 17.4 versions prior to 17.4R2 on MX Series; 18.1 versions prior to 18.1R2-S3, 18.1R3 on MX Series; 18.2 versions prior to 18.2R1-S1, 18.2R2 on MX Series.

Weakness: CWE-20

Which versions are affected by CVE-2018-0058?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2018-0058?

No fix has been published for CVE-2018-0058 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-2018-0058 being exploited?

There is no known exploitation of CVE-2018-0058 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-8qwr-8w32-jp45.

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