CVE-2023-38313

HIGH
7.5
CVSS Score
Published: November 17, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:09 AM UTC
1 product affected across 1 vendorCaptive Portal

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Severity
HIGH7.5
Exploit prediction
EPSS 1.0%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 10.1.2
Affected range stops below 10.1.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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