What’s Vulnerable › Vulnerabilities

CVE-2023-38314

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-17 · updated 2026-06-17
• Weakness: CWE-476

Description

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. It has a NULL pointer dereference in preauthenticated() that can be triggered with a crafted GET HTTP request with a missing redirect query string parameter. Triggering this issue results in crashing OpenNDS (a Denial-of-Service condition). 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.

Affected products

• openNDS Captive Portal: before 10.1.2 — fixed in 10.1.2

How to fix

Upgrade to a fixed version: openNDS Captive Portal 10.1.2. Check the vendor advisory for mitigations.

References

• https://github.com/openNDS/openNDS/releases/tag/v10.1.2
• https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80
• https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006-v4/#sthash.2vJg3d85.rwx82g1C.dpbs
• https://github.com/openNDS/openNDS/releases/tag/v10.1.2
• https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80
• https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006-v4/#sthash.2vJg3d85.rwx82g1C.dpbs

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