What’s Vulnerable › Vulnerabilities

CVE-2015-8559

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-21 · updated 2026-06-17
• Weakness: CWE-200

Description

The knife bootstrap command in chef Infra client before version 15.4.45 leaks the validator.pem private RSA key to /var/log/messages.

Affected products

• Chef: before 15.4.45 — fixed in 15.4.45

How to fix

Upgrade to a fixed version: Chef 15.4.45. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2015/12/14/14
• https://discourse.chef.io/t/chef-infra-client-15-4-45-released/16081
• https://github.com/chef/chef/issues/3871
• https://github.com/chef/chef/pull/8885
• http://www.openwall.com/lists/oss-security/2015/12/14/14
• https://discourse.chef.io/t/chef-infra-client-15-4-45-released/16081
• https://github.com/chef/chef/issues/3871
• https://github.com/chef/chef/pull/8885

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