CVE-2025-3908
OpenVPN Linux Directory Ownership Manipulation Vulnerability
Description
The configuration initialization tool in OpenVPN 3 Linux v20 through v24 on Linux allows a local attacker to use symlinks pointing at an arbitrary directory which will change the ownership and permissions of that destination directory.
INFO
Published Date :
May 19, 2025, 3:15 p.m.
Last Modified :
June 12, 2025, 4:25 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update OpenVPN 3 Linux to the latest version.
- Review and correct ownership/permissions for affected directories.
- Verify the security configuration of the initialization tool.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-3908.
| URL | Resource |
|---|---|
| https://community.openvpn.net/Security%20Announcements/CVE-2025-3908 | Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2025/05/20/2 | Mailing List |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-3908 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-3908
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-3908 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-3908 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 12, 2025
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:a:openvpn:openvpn3linux:*:*:*:*:*:*:*:* versions from (including) 20 up to (including) 24 OR cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2025/05/20/2 Types: Mailing List Added Reference Type OpenVPN Inc.: https://community.openvpn.net/Security%20Announcements/CVE-2025-3908 Types: Vendor Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
May. 20, 2025
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2025/05/20/2 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 19, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N -
New CVE Received by [email protected]
May. 19, 2025
Action Type Old Value New Value Added Description The configuration initialization tool in OpenVPN 3 Linux v20 through v24 on Linux allows a local attacker to use symlinks pointing at an arbitrary directory which will change the ownership and permissions of that destination directory. Added CWE CWE-59 Added Reference https://community.openvpn.net/Security%20Announcements/CVE-2025-3908