CVE-2025-1860
📋 TL;DR
CVE-2025-1860 is a cryptographic weakness in Data::Entropy Perl module versions 0.007 and earlier, where the default entropy source uses Perl's non-cryptographically secure rand() function for cryptographic operations. This allows attackers to potentially predict or manipulate cryptographic outputs, compromising security mechanisms that rely on this module. Affected systems include any Perl applications using Data::Entropy for cryptographic functions like key generation, token creation, or random number generation.
💻 Affected Systems
- Data::Entropy Perl module
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of cryptographic security leading to predictable encryption keys, forged authentication tokens, or broken session security, potentially enabling data decryption, unauthorized access, or impersonation attacks.
Likely Case
Weakened cryptographic implementations where random values become predictable, reducing the security of applications that rely on Data::Entropy for randomness in security-sensitive operations.
If Mitigated
Minimal impact if applications explicitly configure secure entropy sources or use Data::Entropy only for non-security purposes.
🎯 Exploit Status
Exploitation requires understanding of the specific cryptographic implementation using Data::Entropy and ability to predict or influence rand() output. No known public exploits as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Data::Entropy 0.008 or later
Vendor Advisory: https://metacpan.org/release/ZEFRAM/Data-Entropy
Restart Required: No
Instructions:
1. Update Data::Entropy module using CPAN: 'cpan Data::Entropy' 2. Or install specific version: 'cpan Data::Entropy@0.008' 3. Verify installation with: 'perl -MData::Entropy -e "print $Data::Entropy::VERSION"'
🔧 Temporary Workarounds
Configure secure entropy source
allExplicitly configure Data::Entropy to use a cryptographically secure entropy source instead of default rand()
use Data::Entropy::Source;
my $source = Data::Entropy::Source->new(
type => 'Secure',
device => '/dev/urandom'
);
my $entropy = Data::Entropy->new($source);
🧯 If You Can't Patch
- Audit all code using Data::Entropy and ensure it's not used for cryptographic security functions
- Replace Data::Entropy usage with Perl's Crypt::Random::Secure or other cryptographically secure modules for security operations
🔍 How to Verify
Check if Vulnerable:
Check Perl module version: 'perl -MData::Entropy -e "print $Data::Entropy::VERSION"' - if output is 0.007 or lower, system is vulnerable.Check Version:
perl -MData::Entropy -e "print $Data::Entropy::VERSION"Verify Fix Applied:
After update, run same command and verify version is 0.008 or higher. Also check that applications using Data::Entropy function correctly.📡 Detection & Monitoring
Log Indicators:
- No specific log indicators for this vulnerability as it's a design flaw rather than an active exploit
Network Indicators:
- No network-based indicators as this is a local cryptographic weakness
SIEM Query:
No specific SIEM query - focus on inventory management of Perl modules and version tracking