Synology released DSM 5.1-5022 Update 4 that upgrades OpenSSL to 1.0.1m which patches several medium OpenSSL vulnerabilities as well as one high OpenSSL vulnerability.
Fixed Issues in DSM 5.1-5022 Update 4
- Upgraded OpenSSL to 1.0.1m to address multiple vulnerabilities (CVE-2015-0204, CVE-2015-0286, CVE-2015-0287, CVE-2015-0289, CVE-2015-0292, CVE-2015-0293, CVE-2015-0209, and CVE-2015-0288).
How to install Synology DSM 5.1-5022 Update 4
You can download the Synology DSM 5.1-5022 Update 4 from the Synology Download Center or by logging into your Synology dashboard and going to: Control Panel > System > Update & Restore.