CVE-2018-0022 : Vulnerability Insights and Analysis

A potential issue has been identified with Junos devices that have VPLS routing-instances configured on one or more interfaces, leading to a memory leak when processing certain MPLS packets.

Understanding CVE-2018-0022

This CVE affects Junos OS devices with VPLS routing-instances configured, causing a memory leak due to processing MPLS packets.

What is CVE-2018-0022?

This CVE involves a memory leak issue on Junos devices with VPLS routing-instances configured, resulting in mbuf leakage when processing specific MPLS packets.

The Impact of CVE-2018-0022

Affected devices experience a memory leak issue, specifically in the form of mbufs, leading to inaccessibility and requiring a restart.
Only end devices are affected, while transit devices remain unaffected.

Technical Details of CVE-2018-0022

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Junos devices with VPLS routing-instances configured experience a memory leak due to processing specific MPLS packets, resulting in mbuf leakage.

Affected Systems and Versions

Juniper Networks Junos OS versions prior to 12.1X46-D76, 12.3X48-D66, 12.3X48-D70, 14.1R9, 14.1X53-D47, 14.2R8, 15.1F2-S19, 15.1F6-S10, 15.1R4-S9, 15.1R5-S7, 15.1R6-S4, 15.1R7, 15.1X49-D131, 15.1X49-D140, 15.1X53-D58, 15.1X53-D233, 15.1X53-D471, 15.1X53-D66, 16.1R3-S8, 16.1R4-S6, 16.1R5, 16.2R1-S6, 16.2R2-S5, 16.2R3, 17.1R1-S7, 17.1R2-S6, 17.1R3, 17.2R1-S5, 17.2R2, and all subsequent releases are affected.

Exploitation Mechanism

Juniper SIRT has not detected any malicious exploitation of this vulnerability.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-0022 vulnerability.

Immediate Steps to Take

Update affected Junos OS versions to the patched releases provided by Juniper Networks.

Long-Term Security Practices

Regularly monitor and apply software updates to ensure system security.
Implement network segmentation and access controls to mitigate potential risks.

Patching and Updates

Juniper Networks has released updated software versions to resolve the memory leak issue. Ensure all affected systems are updated to the patched releases.