Synology released an important DSM update that fixes GHOST glibc vulnerability as well as several other PHP vulnerabilities, with DSM 5.1-5022 Update 2.
Fixed Issues in DSM 5.1-5022 Update 2
- Implemented fixes related to the GHOST vulnerability (CVE-2015-0235).
- Upgraded PHP to 5.5.21 to address multiple vulnerabilities (CVE-2015-0231, CVE-2014-9427, and CVE-2015-0232).
How to install Synology DSM 5.1-5022 Update 2
You can download the Synology DSM 5.1-5022 Update 2 from the Synology Download Center or by logging into your Synology dashboard and going to: Control Panel > System > Update & Restore.