CVE-2025-0589: linux kernel — Fix

Description

In affected versions of Octopus Deploy where customers are using Active Directory for authentication it was possible for an unauthenticated user to make an API request against two endpoints which would retrieve some data from the associated Active Directory. The requests when crafted correctly would return specific information from user profiles (Email address/UPN and Display name) from one endpoint and group information ( Group ID and Display name) from the other. This vulnerability does not expose data within the Octopus Server product itself.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-648 CWE-648

Affected Products

Vendor	Product	Versions
octopus	octopus_server	2020.3.3 — 2024.3.13071
octopus	octopus_server	2024.4.401 — 2024.4.7065
linux	linux_kernel	All
microsoft	windows	All

References

Advisories & Patches

https://advisories.octopus.com/post/2025/sa2025-01/

Frequently Asked Questions

What is CVE-2025-0589? +

In affected versions of Octopus Deploy where customers are using Active Directory for authentication it was possible for an unauthenticated user to make an API request against two endpoints which would retrieve some data from the associated Active Directory. The requests when crafted correctly would return specific information from user profiles (Email address/UPN and Display name) from one endpoint and group information ( Group ID and Display name) from the other. This vulnerability does not expose data within the Octopus Server product itself. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-0589? +

CVE-2025-0589 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-0589? +

CVE-2025-0589 affects products from linux, microsoft, octopus, specifically: linux_kernel, octopus_server, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-0589? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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