CVE-2025-1805
📋 TL;DR
CVE-2025-1805 is a cryptographic vulnerability in Crypt::Salt for Perl version 0.01 where the insecure rand() function is used to generate salts for cryptographic operations. This allows attackers to potentially predict or brute-force cryptographic salts, weakening security mechanisms that rely on them. Any Perl application using Crypt::Salt 0.01 for cryptographic salt generation is affected.
💻 Affected Systems
- Crypt::Salt for Perl
⚠️ 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
Attackers could predict cryptographic salts, enabling them to brute-force hashed passwords, decrypt sensitive data, or bypass authentication mechanisms that rely on salted cryptographic operations.
Likely Case
Reduced cryptographic strength leading to easier brute-force attacks against hashed passwords or encrypted data, particularly in systems with weak password policies.
If Mitigated
Limited impact if strong additional security controls exist, but cryptographic operations remain weaker than intended.
🎯 Exploit Status
Exploitation requires understanding of the cryptographic implementation and access to hashed/encrypted data. No public exploits have been reported.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Remove Crypt::Salt 0.01 from your Perl installation
2. Replace with a secure cryptographic library like Crypt::Random or use Perl's built-in secure random functions
3. Regenerate any cryptographic salts that were created with the vulnerable version
🔧 Temporary Workarounds
Replace with secure random function
allModify code to use Perl's secure random functions instead of Crypt::Salt
# Replace: use Crypt::Salt;
# With: use Crypt::Random qw(random_bytes);
# Or use: use Math::Random::Secure qw(rand);
🧯 If You Can't Patch
- Implement additional security layers like multi-factor authentication
- Enforce strong password policies and regular password rotation
🔍 How to Verify
Check if Vulnerable:
Check if Crypt::Salt version 0.01 is installed: perl -MCrypt::Salt -e 'print $Crypt::Salt::VERSION'Check Version:
perl -MCrypt::Salt -e 'print $Crypt::Salt::VERSION'Verify Fix Applied:
Verify Crypt::Salt 0.01 is not installed and check that secure random functions are being used📡 Detection & Monitoring
Log Indicators:
- Unusual authentication patterns
- Increased failed login attempts
Network Indicators:
- None specific to this vulnerability
SIEM Query:
Search for processes loading Crypt::Salt module or Perl scripts using insecure random functions