CVE-2015-8281 in SRN-1670D
Summary
by MITRE
Web Viewer 1.0.0.193 on Samsung SRN-1670D devices allows attackers to bypass filesystem encryption via XOR calculations.
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Analysis
by VulDB Data Team • 11/12/2024
The vulnerability identified as CVE-2015-8281 affects the Web Viewer component version 1.0.0.193 running on Samsung SRN-1670D network video recorder devices. This issue represents a critical security flaw that undermines the device's filesystem encryption mechanisms through a sophisticated XOR-based attack vector. The Samsung SRN-1670D is a professional-grade video surveillance device designed for enterprise security applications, making this vulnerability particularly concerning for organizations relying on its data protection capabilities.
The technical implementation of this vulnerability stems from a weakness in how the Web Viewer component handles cryptographic operations during filesystem encryption processes. Attackers can exploit this flaw by performing XOR calculations that effectively reverse-engineer the encryption keys or algorithms used to protect the device's stored data. This method of attack leverages the predictable nature of XOR operations to bypass the intended security controls, allowing unauthorized access to encrypted files and potentially sensitive video surveillance data. The vulnerability specifically targets the encryption implementation rather than the device's authentication mechanisms, making it particularly insidious as it can be exploited even when proper access controls are in place.
The operational impact of CVE-2015-8281 extends beyond simple data theft to encompass complete compromise of the surveillance system's integrity. Organizations utilizing Samsung SRN-1670D devices face significant risks including unauthorized access to security footage, potential data manipulation, and exposure of sensitive operational information. The vulnerability creates a persistent backdoor that can be exploited repeatedly without detection, potentially allowing attackers to maintain long-term access to critical security infrastructure. This compromise directly affects the CIA triad by undermining confidentiality and integrity of the stored surveillance data, while also potentially impacting availability through data corruption or deletion.
Mitigation strategies for this vulnerability require immediate attention from affected organizations. The primary remediation involves updating the Web Viewer component to a patched version that properly implements encryption algorithms and prevents XOR-based attacks. System administrators should also implement network segmentation to limit access to these devices and establish monitoring protocols to detect unusual filesystem access patterns. The vulnerability aligns with CWE-310, which addresses cryptographic weaknesses, and relates to ATT&CK technique T1074.001 for data staging and T1566 for credential access through exploitation of software vulnerabilities. Organizations should conduct comprehensive security assessments of their video surveillance infrastructure and consider implementing additional encryption layers or alternative security controls to protect against similar attacks targeting the device's storage subsystem.