What’s Vulnerable › Vulnerabilities

CVE-2023-38313

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% 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 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.

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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