CVE-2006-1117 in nCore
Summary
by MITRE
nCipher firmware before V10, as used by (1) nShield, (2) nForce, (3) netHSM, (4) payShield, (5) SecureDB, (6) DSE200 Document Sealing Engine, (7) Time Source Master Clock (TSMC), and possibly other products, contains certain options that were only intended for testing and not production, which might allow remote attackers to obtain information about encryption keys and crack those keys with less effort than brute force.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 09/09/2017
The vulnerability described in CVE-2006-1117 represents a critical security flaw in nCipher hardware security modules and cryptographic appliances that were widely deployed in enterprise and government environments for protecting sensitive data and cryptographic keys. This issue affects multiple nCipher products including nShield, nForce, netHSM, payShield, SecureDB, DSE200 Document Sealing Engine, and Time Source Master Clock, indicating a systemic problem within the firmware design rather than isolated product-specific issues. The flaw specifically involves the presence of testing options within the production firmware that were never intended for operational use but remained enabled in deployed systems. These testing features create a backdoor mechanism that significantly weakens the cryptographic security posture of affected devices, potentially exposing the underlying encryption keys to unauthorized access.
The technical implementation of this vulnerability stems from the inclusion of debug and testing functionality within the firmware that should have been completely disabled or removed from production deployments. When these testing options remain active, they can be exploited by remote attackers to gather information about the encryption keys used by the cryptographic modules. This information leakage creates a pathway for attackers to reduce the computational complexity required to crack the encryption keys from brute force methods to more efficient attacks. The vulnerability directly relates to CWE-254, which addresses security weaknesses in cryptographic implementations, and represents a failure in the principle of least privilege where testing mechanisms were not properly isolated from production environments. The attack surface is particularly concerning because these devices often serve as primary key management infrastructure for organizations, making them attractive targets for sophisticated adversaries seeking to compromise entire cryptographic ecosystems.
The operational impact of this vulnerability extends beyond simple information disclosure, as it fundamentally undermines the security guarantees provided by the cryptographic infrastructure. Organizations relying on these nCipher appliances for protecting sensitive data, financial transactions, digital signatures, and secure communications face significant risk of data breaches and cryptographic compromise. The vulnerability affects systems that typically require high security standards and compliance with regulations such as FIPS 140-2, PCI DSS, and various government security frameworks. Attackers exploiting this weakness could potentially decrypt sensitive communications, forge digital signatures, or gain unauthorized access to protected systems. The remote nature of the attack vector means that adversaries do not require physical access to the devices, making the vulnerability particularly dangerous in networked environments where these appliances are commonly deployed. This flaw also violates fundamental security principles outlined in the MITRE ATT&CK framework under the T1552 category, which covers techniques for accessing data through unencrypted or weakly encrypted storage, and demonstrates how insecure configuration management can lead to critical security vulnerabilities.
Mitigation strategies for this vulnerability require immediate action from affected organizations, including firmware updates from nCipher that properly disable the testing options and ensure that all production appliances are running secure firmware versions. System administrators must conduct comprehensive inventories of all nCipher products deployed across their infrastructure to identify affected devices and ensure proper firmware updates are applied. The remediation process should include thorough testing of updated firmware to ensure compatibility with existing cryptographic operations and business processes. Organizations should also implement enhanced monitoring and logging of cryptographic operations to detect any unusual activities that might indicate exploitation attempts. Additionally, the vulnerability highlights the importance of proper security testing and configuration management practices, including regular security assessments of firmware components and ensuring that testing features are completely removed from production environments. Organizations should review their supply chain security practices and vendor security assurance processes to prevent similar issues in the future, particularly focusing on the secure development lifecycle and proper separation of development, testing, and production environments as recommended by NIST SP 800-160 and ISO/IEC 27001 standards.