CVE-2023-28864

Name: CVE-2023-28864
Creator: NVD / NIST
Published: 2023-07-17T20:15:13.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2023-28864 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.25%

15.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-922

Affected Software

Vendor	Product	Versions
Progress	Chef Infra Server	>= 12.0.0, < 15.7.0

References

https://blog.mondoo.com/chef-infra-server-cve-2023-28864-impact-and-remediationMitigation, Third Party Advisory
https://docs.chef.io/release_notes_server/Release Notes
https://github.com/chef/chef-server/blob/8a2dc82148844767f7c7728633a03dcee812e56a/omnibus/files/server-ctl-cookbooks/infra-server/recipes/oc_bifrost.rb#L42Product
https://blog.mondoo.com/chef-infra-server-cve-2023-28864-impact-and-remediationMitigation, Third Party Advisory
https://docs.chef.io/release_notes_server/Release Notes
https://github.com/chef/chef-server/blob/8a2dc82148844767f7c7728633a03dcee812e56a/omnibus/files/server-ctl-cookbooks/infra-server/recipes/oc_bifrost.rb#L42Product

Timeline

Published: Jul 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28864?

How severe is CVE-2023-28864?

CVE-2023-28864 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28864?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-28864?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST