Horizon Alert
Summary of the vulnerability and why it matters
An improper encoding vulnerability in Synology DiskStation Manager's SCGI component could allow attackers to read or write files and disrupt services. This issue affects Synology devices, which are often internet-connected for remote access and file sharing. The main concern is to confirm relevance and exposure within our environment.
- Attackers could access or change files.
- Synology devices are commonly internet-facing.
- Confirm if our Synology devices are affected.
Attack Path
How an attacker could exploit the issue
An attacker can target Synology DiskStation Manager (DSM) by sending specially crafted data over the network to the SCGI component. This can allow them to read or write any file on the system, potentially leading to denial-of-service conditions.
- Network access required.
- SCGI component is the trigger.
- Arbitrary file access and DoS risk.
Live Threat
Current exploitation, exposure, and threat context
Remote attackers could read or write arbitrary files and disrupt service on Synology DiskStation Manager, potentially impacting system integrity and availability. This could occur when the SCGI component is accessed remotely.
- System files and data could be accessed.
- Arbitrary file read/write operations.
- Service disruption or unauthorized data modification.
Operational Fix
Recommended remediation, mitigation, and detection steps
The SCGI component within Synology DSM is likely managed by infrastructure or platform teams responsible for the operating system. The first practical step is to identify all Synology devices, confirm their internet exposure and business criticality, and then engage the accountable owner to plan remediation during the next maintenance window, coordinating with the vendor as needed.
- Infrastructure or platform teams own the issue.
- Verify internet exposure and business criticality.
- Plan remediation with vendor coordination.
