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CVE-2006-0591

1.2 · LOW

The crypt_gensalt functions for BSDI-style extended DES-based and FreeBSD-sytle MD5-based password hashes in crypt_blowfish 0.4.7 and earlier do not evenly and randomly distribute salts, which make…

Published Feb 8, 2006solar_designerCWE-310EPSS 0.39%

Overview

CVE-2006-0591 is a low-severity vulnerability affecting solar_designer crypt_blowfish. It was published on February 8, 2006 and has a CVSS 2.0 base score of 1.2 (LOW).

This vulnerability has a CVSS 2.0 base score of 1.2, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The crypt_gensalt functions for BSDI-style extended DES-based and FreeBSD-sytle MD5-based password hashes in crypt_blowfish 0.4.7 and earlier do not evenly and randomly distribute salts, which makes it easier for attackers to guess passwords from a stolen password file due to the increased number of collisions.

Remediation

Check the references section for vendor advisories and patches from solar_designer. Update crypt_blowfish to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

Frequently asked questions

What is CVE-2006-0591?

CVE-2006-0591 is a low-severity vulnerability affecting solar_designer crypt_blowfish. It was published on February 8, 2006 and has a CVSS 2.0 base score of 1.2 (LOW).

How severe is CVE-2006-0591?

This vulnerability has a CVSS 2.0 base score of 1.2, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2006-0591?

Check the references section for vendor advisories and patches from solar_designer. Update crypt_blowfish to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2006-0591?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-0591 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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