CVE-2020-14474 in UFED Physical Device
Summary
by MITRE
The Cellebrite UFED physical device 5.0 through 7.5.0.845 relies on key material hardcoded within both the executable code supporting the decryption process, and within the encrypted files themselves by using a key enveloping technique. The recovered key material is the same for every device running the same version of the software, and does not appear to be changed with each new build. It is possible to reconstruct the decryption process using the hardcoded key material and obtain easy access to otherwise protected data.
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Analysis
by VulDB Data Team • 07/01/2020
The vulnerability identified as CVE-2020-14474 represents a critical cryptographic weakness in Cellebrite UFED physical devices version 5.0 through 7.5.0.845, which directly impacts the security posture of digital forensics operations. This flaw stems from the implementation of hardcoded cryptographic keys within both the software executable code and the encrypted file structures themselves, creating a fundamental breach in the device's security architecture. The vulnerability operates through a key enveloping technique that embeds the same cryptographic material within every device running the affected software versions, eliminating any form of device-specific or session-based key derivation that would normally provide security through obscurity. This design choice fundamentally contradicts established cryptographic best practices and creates a single point of failure that undermines the entire encryption framework.
The technical implementation of this vulnerability manifests through the use of static key material that remains consistent across all devices operating within the specified software versions, regardless of hardware variations or individual device configurations. This hardcoded approach eliminates any form of entropy or randomness that would typically be required for secure cryptographic operations, making the system susceptible to reverse engineering and decryption attacks. The key material appears to persist unchanged across software updates, creating a persistent vulnerability that can be exploited by adversaries who obtain sufficient information about the system's internal workings. This weakness directly maps to CWE-327, which addresses the use of insecure or weak cryptographic algorithms, and specifically relates to the improper implementation of cryptographic key management practices that should never involve hardcoded values in production systems.
The operational impact of this vulnerability extends far beyond simple data access, as it fundamentally compromises the integrity and confidentiality guarantees that digital forensics tools are expected to provide. Security researchers and malicious actors who discover these hardcoded keys can easily reconstruct the decryption process and gain unauthorized access to protected data without requiring any specialized knowledge of the target device's specific configuration or the user's authentication credentials. The vulnerability effectively neutralizes the security controls that organizations rely upon to protect sensitive information, particularly in forensic contexts where such tools are expected to maintain the highest security standards. This weakness creates a significant risk for law enforcement and corporate security teams who depend on these devices for investigating sensitive cases, as it means that any device running the vulnerable software can be compromised through the simple process of extracting and utilizing the hardcoded key material. The implications are particularly severe given that the same key material is shared across all devices in the same software version, meaning that a single successful attack can potentially compromise thousands of devices simultaneously.
Mitigation strategies for this vulnerability must address both the immediate exposure and the underlying design flaw that created the vulnerability in the first place. Organizations should immediately upgrade to software versions that have addressed this hardcoded key issue, while also implementing additional security controls such as network segmentation and access monitoring to detect potential exploitation attempts. The vulnerability highlights the critical importance of proper key management practices and demonstrates why cryptographic systems should never rely on hardcoded values that persist across multiple deployments. Security teams should also consider implementing behavioral analytics and anomaly detection systems to monitor for unusual patterns that might indicate attempts to exploit this vulnerability, as the attack surface is significantly reduced due to the predictable nature of the hardcoded keys. The incident underscores the necessity of following established security frameworks such as NIST SP 800-57 for cryptographic key management and emphasizes the importance of regular security assessments to identify and remediate similar vulnerabilities in other security tools and systems.