CVEvulnerability
CVE-2023-38320
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-11-17
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-476
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.
Affected configurations
• opennds captive portal (< 10.1.2)
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- https://github.com/openNDS/openNDS/releases/tag/v10.1.2 Release Notes, Vendor Advisory
- https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80 github.com
- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006/#sthash.2vJg3d85.dpbs source.sierrawireless.com
- https://github.com/openNDS/openNDS/releases/tag/v10.1.2 Release Notes, Vendor Advisory
- https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80 github.com
- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006/#sthash.2vJg3d85.dpbs source.sierrawireless.com