PT-2023-26724 · Opnsense · Opnsense Community Edition+1

Feliks Penconek · Published 2023-08-09 · Updated 2023-10-10 · CVE-2023-38999

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OPNsense Community Edition versions prior to 23.7 OPNsense Business Edition versions prior to 23.4.2

Description A Cross-Site Request Forgery (CSRF) issue in the System Halt API at the "/system/halt" endpoint allows attackers to cause a Denial of Service (DoS) via a crafted GET request. This issue can be exploited by sending a specifically designed request to the affected API endpoint.

Recommendations For OPNsense Community Edition versions prior to 23.7, update to version 23.7 or later. For OPNsense Business Edition versions prior to 23.4.2, update to version 23.4.2 or later. As a temporary workaround, consider restricting access to the "/system/halt" API endpoint to minimize the risk of exploitation.

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2023-38999

Affected Products

Opnsense Business Edition

Opnsense Community Edition

References · 6

• 🔥 https://logicaltrust.net/blog/2023/08/opnsense.html · Exploit
• https://github.com/opnsense/core/commit/5d68f43d1f254144831881fc87d885eed120cf3c · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-38999 · Security Note
• https://osv.dev/vulnerability/CVE-2023-38999 · Vendor Advisory
• https://t.me/cibsecurity/68123 · Telegram Post
• https://t.me/cvenotify/56139 · Telegram Post