sshd stops working on Linux servers when upgrading DLP Enforce and Detection servers

Products

• Data Loss Prevention Endpoint Prevent
• Data Loss Prevention Network Monitor
• Data Loss Prevention Network Prevent for Email
• Data Loss Prevention for Mobile
• Data Loss Prevention Enforce
• Data Loss Prevention Network Discover

Issue/Introduction

Upgrading Red Hat 6.6 servers to newer versions with Data Loss Prevention (DLP) installed results in an error. (DLP 14.X - 15.X)

After the upgrade sshd on all of the upgraded servers stops working with an error pointing to the DLP 'libz.so.1' module.

Starting sshd gives the following error:

"Starting sshd: /usrsbin/sshd: error while loading shared libraries: libz.so.1: failed to map segment from shared object: Permission denied".

Environment

Data Loss Prevention 14.x

Data Loss Prevention 15.x

Cause

This error can be caused if SELinux is enabled on the server or is not set to "permissive"

Resolution

Disable SELinux or set it to "permissive". If set to disabled; the system will need to be rebooted to apply the changes.