CVE-2022-27625 in DSM
Summary
by MITRE • 10/20/2022
A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the message processing functionality of Out-of-Band (OOB) Management. This allows remote attackers to execute arbitrary commands via unspecified vectors. The following models with Synology DiskStation Manager (DSM) versions before 7.1.1-42962-2 may be affected: DS3622xs+, FS3410, and HD6500.
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Analysis
by VulDB Data Team • 11/18/2022
This vulnerability represents a classic buffer overflow condition that occurs within the out-of-band management subsystem of Synology DiskStation devices. The issue stems from inadequate input validation and memory boundary checking during message processing operations, creating a scenario where attacker-controlled data can exceed allocated buffer space. The affected models including DS3622xs+, FS3410, and HD6500 operate with DSM versions prior to 7.1.1-42962-2, making them susceptible to exploitation through remote attack vectors. The vulnerability is categorized under CWE-121, which specifically addresses stack-based buffer overflow conditions, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter usage, as successful exploitation enables arbitrary command execution.
The technical flaw manifests when the OOB management functionality processes incoming messages without proper bounds checking mechanisms. Attackers can craft malicious payloads that exceed the intended buffer capacity, potentially overwriting adjacent memory locations including return addresses, function pointers, or other critical control data. This memory corruption can lead to unpredictable behavior, application crashes, or more critically, complete system compromise. The unspecified vectors suggest that the attack surface may involve multiple communication protocols or interfaces within the OOB management system, making the vulnerability particularly concerning from a security perspective as it could be exploited through various network entry points.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as successful exploitation directly enables remote code execution capabilities. Attackers can leverage this vulnerability to gain unauthorized access to the affected devices, potentially leading to complete system compromise, data exfiltration, or use of the compromised device as a pivot point for further attacks within the network. The affected Synology models represent enterprise-grade storage solutions commonly deployed in business environments, making the potential damage significant. Organizations utilizing these devices face risks including unauthorized data access, system integrity compromise, and potential regulatory compliance violations due to the severity of the vulnerability.
Mitigation strategies should prioritize immediate deployment of the vendor-provided security patches for DSM version 7.1.1-42962-2 or later, which address the buffer overflow conditions through proper input validation and memory boundary checks. Network segmentation and access control measures should be implemented to limit exposure of OOB management interfaces to trusted networks only. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other network components. The remediation approach aligns with NIST cybersecurity framework recommendations for vulnerability management and incident response, while also supporting the principle of least privilege as outlined in ISO/IEC 27001 security standards. Organizations should also consider implementing network monitoring solutions to detect anomalous traffic patterns that might indicate exploitation attempts against this vulnerability.