Executive Summary

Crypt::SaltedHash versions through 0.09 for Perl are vulnerable to timing attacks.

These versions use Perl's built-in eq comparison, which can have discrepancies in timing.

An attacker could exploit these timing differences to guess the underlying hash.

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Impact Analysis

This vulnerability could allow an attacker to perform timing attacks to deduce the underlying hash values.

If the hashes represent sensitive data such as passwords, this could lead to unauthorized access or compromise of user credentials.

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Compliance Impact

The vulnerability in Crypt::SaltedHash versions up to 0.09 allows timing attacks that could enable an attacker to guess underlying hash values. This could potentially lead to unauthorized access to sensitive data if hashes are used for authentication or data protection.

Such a vulnerability may impact compliance with standards and regulations like GDPR or HIPAA, which require adequate protection of personal and sensitive data. If an attacker exploits this timing attack to compromise hashed data, it could result in a data breach or unauthorized disclosure, thereby violating these regulations.

To maintain compliance, it is important to mitigate this vulnerability by upgrading to Crypt::SaltedHash version 0.10 or later, which implements a constant-time comparison to prevent timing attacks.

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Mitigation Strategies

To mitigate the vulnerability in Crypt::SaltedHash versions up to 0.09, you should upgrade to version 0.10 or later.

The fix replaces the insecure string comparison with a constant-time comparison to prevent timing attacks.

The patch is available on GitHub and the update is documented in the release notes for version 0.10.

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