CVE-2003-1389 in Cryptobuddy
Summary
by MITRE
RTS CryptoBuddy 1.2 and earlier truncates long passphrases without warning the user, which may make it easier to conduct certain brute force guessing attacks.
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Analysis
by VulDB Data Team • 06/16/2018
The vulnerability identified in CVE-2003-1389 affects RTS CryptoBuddy version 1.2 and earlier, representing a critical flaw in cryptographic software design that undermines security through improper passphrase handling. This issue manifests when users input passphrases exceeding the system's configured maximum length, causing the software to silently truncate these inputs without any user notification or warning. The vulnerability resides in the software's passphrase validation and processing mechanisms, where the system fails to implement proper input length checking and user feedback protocols. This behavior creates a significant security risk by allowing attackers to exploit the truncated passphrase functionality in ways that compromise the overall cryptographic strength of the system.
The technical implementation flaw stems from the software's failure to enforce consistent passphrase length limits across its cryptographic processing pipeline. When a user enters a passphrase longer than the system's internal buffer capacity, the application automatically truncates the input at a predetermined length without alerting the user to this modification. This truncation occurs silently in the background, meaning that users remain unaware that their intended security measures have been effectively weakened. The vulnerability specifically relates to CWE-20, which describes improper input validation, and CWE-312, which covers the exposure of sensitive information through partial exposure. The system's lack of proper input sanitization creates a predictable pattern where attackers can systematically test shorter portions of passphrases, knowing that longer inputs will be reduced to shorter equivalents.
From an operational perspective, this vulnerability significantly weakens the security posture of any system utilizing RTS CryptoBuddy 1.2 or earlier versions. The silent truncation of passphrases creates an environment where brute force attacks become substantially more effective, as attackers can focus their efforts on the truncated portion rather than the full passphrase. This vulnerability directly aligns with ATT&CK technique T1213, which involves data from information repositories, and T1212, which covers exploitation for credential access. The reduced effective entropy of passphrases makes dictionary attacks and rainbow table attacks more successful, as the truncated inputs often result in patterns that are more easily guessed or computed. Additionally, this flaw creates a false sense of security for users who believe they have entered strong passphrases, while the system operates with significantly weakened cryptographic parameters.
The mitigation strategy for this vulnerability requires immediate software updates to address the truncation behavior and implement proper user feedback mechanisms. Organizations should ensure that all instances of RTS CryptoBuddy are upgraded to versions that either properly enforce passphrase length limits or provide explicit warnings when passphrases exceed acceptable lengths. The system should be configured to reject passphrases that exceed predetermined security thresholds and notify users of such rejections through clear, unambiguous interfaces. Security administrators should also implement monitoring procedures to detect and alert on potential exploitation attempts that might leverage this vulnerability. The solution must incorporate proper input validation techniques as outlined in industry standards, ensuring that all user inputs are properly checked and that users receive immediate feedback when their inputs do not meet security requirements. This vulnerability demonstrates the critical importance of user awareness and system transparency in cryptographic applications, as the lack of warning mechanisms can lead to severe security implications that extend far beyond the immediate technical flaw.