CVE-2023-38324

MEDIUM

OpenNDS Captive Portal < 10.1.2 - Authentication Bypass via Default FAS Key

Title source: llm

Description

An issue was discovered in OpenNDS before 10.1.2. It allows users to skip the splash page sequence (and directly authenticate) when it is using the default FAS key and OpenNDS is configured as FAS. Affected OpenNDS Captive Portal before version 10.1.2 fixed in OpenWrt master, OpenWrt 23.05 and OpenWrt 22.03 on 28. August 2023 by updating OpenNDS to version 10.1.3.

References (7)

Core 7

Core References

Various Sources

https://cwe.mitre.org/data/definitions/1390.html

Various Sources

https://github.com/openNDS/openNDS/blob/master/ChangeLog

View Writeup ZIP pw:eip

Various Sources

https://openwrt.org/docs/guide-user/services/captive-portal/opennds

Various Sources

https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006-v4/#sthash.2vJg3d85.rwx82g1C.dpbs

Various Sources

https://www.forescout.com/resources/sierra21-vulnerabilities

Release Notes, Vendor Advisory

https://github.com/openNDS/openNDS/releases/tag/v10.1.2

Patch

https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80

View Patch ZIP pw:eip

Scores

CVSS v3 5.3

EPSS 0.0069

EPSS Percentile 47.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

Status published

Products (1)

opennds/captive_portal < 10.1.2

Published Nov 17, 2023

Tracked Since Feb 18, 2026