CVE-2024-58040 in Crypt::RandomEncryption
Summary
by MITRE • 09/30/2025
Crypt::RandomEncryption for Perl version 0.01 uses insecure rand() function during encryption.
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Analysis
by VulDB Data Team • 03/09/2026
The vulnerability identified as CVE-2024-58040 affects the Crypt::RandomEncryption Perl module version 0.01, which employs an insecure random number generation function during cryptographic operations. This flaw represents a critical weakness in the module's implementation of encryption algorithms that rely on random data for security. The use of insecure random number generation fundamentally undermines the cryptographic strength of the encryption process, making the system vulnerable to various attacks that exploit predictable or insufficiently random data.
The technical flaw stems from the module's reliance on the standard rand() function rather than cryptographically secure random number generators. The rand() function in Perl produces pseudo-random numbers that are not suitable for cryptographic purposes, as they can be predictable and lack the statistical randomness required for secure encryption. This vulnerability directly maps to CWE-330, which identifies the use of insufficiently random values in cryptographic contexts. The insecure random number generation creates a predictable entropy source that attackers can potentially exploit to compromise encrypted data through techniques such as key recovery or pattern analysis.
The operational impact of this vulnerability extends beyond simple encryption failures, as it fundamentally compromises the confidentiality and integrity of data protected by the affected module. Systems utilizing this Perl module for encryption purposes become susceptible to attacks that can reverse-engineer encryption keys or predict encryption patterns, leading to unauthorized data access and potential information breaches. This vulnerability affects any application or system that depends on Crypt::RandomEncryption for secure data handling, particularly those in environments where sensitive information requires robust cryptographic protection.
Mitigation strategies for CVE-2024-58040 should prioritize immediate replacement of the vulnerable module with a cryptographically secure alternative that utilizes proper random number generation functions such as /dev/urandom or Perl's Math::Random::Secure module. Organizations should conduct comprehensive audits of all systems using this module to identify potential exposure and implement proper random number generation practices. The remediation process should also include reviewing other cryptographic implementations within the system to ensure no similar vulnerabilities exist. From an ATT&CK framework perspective, this vulnerability aligns with techniques involving credential access and defense evasion, as attackers can exploit the weak random number generation to compromise encryption and potentially gain unauthorized access to protected systems. Regular security assessments and dependency monitoring should be implemented to prevent similar issues in future deployments, ensuring that all cryptographic libraries use appropriate entropy sources that meet industry standards for secure random number generation.