What’s Vulnerable › Vulnerabilities

CVE-2023-28864

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-17 · updated 2026-06-17
• Weakness: CWE-922

Description

Progress Chef Infra Server before 15.7 allows a local attacker to exploit a /var/opt/opscode/local-mode-cache/backup world-readable temporary backup path to access sensitive information, resulting in the disclosure of all indexed node data, because OpenSearch credentials are exposed. (The data typically includes credentials for additional systems.) The attacker must wait for an admin to run the "chef-server-ctl reconfigure" command.

Affected products

• Progress Chef Infra Server: from 12.0.0 before 15.7.0 — fixed in 15.7.0

How to fix

Upgrade to a fixed version: Progress Chef Infra Server 15.7.0. Check the vendor advisory for mitigations.

References

• https://blog.mondoo.com/chef-infra-server-cve-2023-28864-impact-and-remediation
• https://docs.chef.io/release_notes_server/
• https://github.com/chef/chef-server/blob/8a2dc82148844767f7c7728633a03dcee812e56a/omnibus/files/server-ctl-cookbooks/infra-server/recipes/oc_bifrost.rb#L42
• https://blog.mondoo.com/chef-infra-server-cve-2023-28864-impact-and-remediation
• https://docs.chef.io/release_notes_server/
• https://github.com/chef/chef-server/blob/8a2dc82148844767f7c7728633a03dcee812e56a/omnibus/files/server-ctl-cookbooks/infra-server/recipes/oc_bifrost.rb#L42

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