CVE-2023-38313

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductOpennds Captive Portal

PublishedNov 17, 2023

First seenNov 17, 2023

How to fix

Update

opennds captive_portal10.1.2 or later

Affected products

Product	Affected versions	Fixed in
opennds captive_portal	v < 10.1.2	10.1.2

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