CVE-2018-0016

Junos OS: Kernel crash upon receipt of crafted CLNP datagrams

Description

Receipt of a specially crafted Connectionless Network Protocol (CLNP) datagram destined to an interface of a Junos OS device may result in a kernel crash or lead to remote code execution. Devices are only vulnerable to the specially crafted CLNP datagram if 'clns-routing' or ES-IS is explicitly configured. Devices with without CLNS enabled are not vulnerable to this issue. Devices with IS-IS configured on the interface are not vulnerable to this issue unless CLNS routing is also enabled. This issue only affects devices running Junos OS 15.1. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1F5-S3, 15.1F6-S8, 15.1F7, 15.1R5; 15.1X49 versions prior to 15.1X49-D60; 15.1X53 versions prior to 15.1X53-D66, 15.1X53-D233, 15.1X53-D471. Earlier releases are unaffected by this vulnerability, and the issue has been resolved in Junos OS 16.1R1 and all subsequent releases.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 15.1F5-S3, 15.1F6-S8, 15.1F7, 15.1R5, 15.1X49-D60, 15.1X53-D66, 15.1X53-D233, 15.1X53-D471, 16.1R1, and all subsequent releases.

Workaround:

  • Use access lists or firewall filters to limit access to the device via CLNP only from trusted hosts.
9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 17.45% Top 10%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/103747 third party advisory vdb entry
http://www.securitytracker.com/id/1040784 third party advisory vdb entry
https://kb.juniper.net/JSA10844 mitigation vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-0016?
CVE-2018-0016 has been scored as a critical severity vulnerability.
How to fix CVE-2018-0016?
To fix CVE-2018-0016: The following software releases have been updated to resolve this specific issue: 15.1F5-S3, 15.1F6-S8, 15.1F7, 15.1R5, 15.1X49-D60, 15.1X53-D66, 15.1X53-D233, 15.1X53-D471, 16.1R1, and all subsequent releases.
Is CVE-2018-0016 being actively exploited in the wild?
It is possible that CVE-2018-0016 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~17% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0016?
CVE-2018-0016 affects Juniper Networks Junos OS.
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