DSM 5.2-5644 Update 5

Severity
Security.impact_level_
Status
Resolved

Description

DSM 5.2-5644 Update 5 includes a Firewall filter policy update to fix a security vulnerability caused by stack-based buffer overflow (CVE-2015-7547).

Resolution

To fix the security issues, please go to DSM > Control Panel > Update & Restore > DSM Update and install DSM 5.2-5644 Update 5 or above to protect your Synology NAS from malicious attacks.

Note

This workaround can effectively prevent Synology NAS from this vulnerability. However, this fix may impact read/write performance on the following models by no more than 15%, for which Synology is working on an enhancement in the future release.

  • 16-series: DS216se
  • 15-series: DS115j
  • 14-series: EDS14, DS114, DS214se, RS214, DS414slim
  • 13-series: DS213j, DS213air, DS213, DS413j
  • 12-series: DS112, DS112+, DS112j, DS212, DS212j, DS212+, RS212, RS812
  • 11-series: DS111, DS211, DS211+, DS211j, DS411, DS411slim, DS411j, RS411
  • 10-series: DS110j, DS210j, DS410j