# CVE-2023-38313: opennds: An issue was discovered in OpenNDS Captive Portal before 10.1.2

CVE-2023-38313 is fixed in opennds on 1 platform by DEBIAN-CVE-2023-38313 (version 10.2.0+dfsg-1), released November 17, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-38313
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0096
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 17, 2023

## Description

An issue was discovered in OpenNDS Captive Portal before 10.1.2. it has a do_binauth NULL pointer dereference that can be triggered with a crafted GET HTTP request with a missing client redirect query string parameter. Triggering this issue results in crashing openNDS (a Denial-of-Service condition). The issue occurs when the client is about to be authenticated, and can be triggered only when the BinAuth option is set. Affected OpenNDS Captive Portal before version 10.1.2 fixed infixed in OpenWrt master, OpenWrt 23.05 and OpenWrt 22.03 on28. August 2023 by updating OpenNDS to version 10.1.3.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | opennds Debian 13.5 (trixie) | 10.2.0+dfsg-1 | [DEBIAN-CVE-2023-38313](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38313.md) | Nov 17, 2023 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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