CVE-2018-0043 : Security Advisory and Response

This CVE article provides details about a vulnerability in Junos OS that can lead to the crashing and restarting of the routing protocol daemon (RPD) process or potential remote code execution.

Understanding CVE-2018-0043

This vulnerability affects various versions of Juniper Networks Junos OS on different series such as SRX, QFX/EX, QFabric, EX2300/EX3400, QFX10K, QFX5200/QFX5110, and NFX Series.

What is CVE-2018-0043?

Receiving a specific MPLS packet may result in the crashing and restarting of the RPD process or potentially lead to the execution of remote code. This vulnerability affects both IPv4 and IPv6.

The Impact of CVE-2018-0043

Continuous sending of specific MPLS packets can crash the RPD process, causing a sustained Denial of Service.
The exploit can only be carried out from within the MPLS domain.
End-users connected to the CE device are unable to cause this crash.

Technical Details of CVE-2018-0043

This section provides technical insights into the vulnerability.

Vulnerability Description

Specific MPLS packet receipt can crash the RPD process or lead to remote code execution.

Affected Systems and Versions

Junos OS versions prior to specific releases on SRX, QFX/EX, QFabric, EX2300/EX3400, QFX10K, QFX5200/QFX5110, and NFX Series.

Exploitation Mechanism

Attacker sends specific MPLS packets to crash the RPD process.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2018-0043 vulnerability.

Immediate Steps to Take

Update to the patched software releases listed in the solutions section.

Long-Term Security Practices

Regularly update Junos OS to the latest versions to ensure security.

Patching and Updates

Apply the provided software releases to resolve the specific issue.