VULNERABILITY INTELLIGENCE

CVE-2023-38320

CVSS score7.5 HIGH

EPSS probability0.96%

CISA KEVNot currently listed

Published2023-11-17

Last modified2026-06-17

Description

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. It has a show_preauthpage NULL pointer dereference that can be triggered with a crafted GET HTTP with a missing User-Agent header. Triggering this issue results in crashing OpenNDS (a Denial-of-Service condition). This problem was fixed in OpenWrt master, OpenWrt 23.05 and OpenWrt 22.03 on 28. August 2023 by updating OpenNDS to version 10.1.3.