CVE-2003-1392 in Cryptobuddy
Summary
by MITRE
CryptoBuddy 1.0 and 1.2 does not use the user-supplied passphrase to encrypt data, which could allow local users to use their own passphrase to decrypt the data.
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Analysis
by VulDB Data Team • 06/16/2018
The vulnerability described in CVE-2003-1392 affects CryptoBuddy versions 1.0 and 1.2, representing a critical weakness in the cryptographic implementation that undermines the security assurances typically expected from encryption software. This flaw resides in the fundamental design of how the application handles user-supplied passphrases during the encryption process, creating a scenario where the system fails to properly utilize the provided credentials for data protection. The vulnerability specifically manifests as a failure to incorporate user-provided passphrases into the encryption algorithm, leaving the encrypted data susceptible to unauthorized access through alternative means.
The technical implementation flaw in CryptoBuddy stems from improper handling of cryptographic keys and passphrase integration within the encryption routine. When users attempt to encrypt data using the application, the system should utilize the supplied passphrase to generate or derive the encryption key that secures the information. However, the vulnerability demonstrates that the application does not properly integrate user passphrases into the encryption process, potentially relying on default keys or hardcoded values instead. This represents a clear violation of cryptographic best practices and security principles that require user-provided credentials to be the primary factor in determining encryption strength and access control. The flaw falls under the category of improper cryptographic key handling and can be classified as a weakness in the implementation of cryptographic functions according to CWE standards.
The operational impact of this vulnerability is significant for local users who may exploit the weakness to decrypt data without possessing the correct passphrase. This creates a scenario where unauthorized access to encrypted information becomes possible through alternative means, effectively nullifying the security provided by the encryption system. The vulnerability enables local privilege escalation attacks where users can bypass the intended passphrase-based access controls and gain access to sensitive information that should remain protected. From an attack perspective, this weakness aligns with techniques described in the MITRE ATT&CK framework under credential access and defense evasion categories, as it allows adversaries to obtain access to encrypted data without proper authentication mechanisms. The vulnerability essentially creates a backdoor mechanism where the encryption process becomes ineffective due to the lack of proper passphrase utilization.
Mitigation strategies for this vulnerability should focus on immediate software updates and patches to correct the cryptographic implementation. Organizations using CryptoBuddy versions 1.0 and 1.2 must urgently upgrade to patched versions that properly integrate user-supplied passphrases into the encryption process. System administrators should implement monitoring for unauthorized access attempts and ensure that proper access controls are maintained on the affected systems. Additionally, users should be educated about the importance of keeping software updated and the risks associated with using vulnerable cryptographic applications. The remediation process should include thorough testing of the patched version to ensure that passphrase-based encryption functions correctly and that the vulnerability has been fully resolved. This type of vulnerability highlights the critical importance of proper cryptographic implementation and the need for comprehensive security testing of encryption software before deployment in production environments.