Advisory Published

CVE-2023-38322: Null Pointer Dereference

First published: Fri Nov 17 2023(Updated: )

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. It has a do_binauth NULL pointer dereference that be triggered with a crafted GET HTTP request with a missing User-Agent HTTP header. 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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
OpenNDS Captive Portal<10.1.2

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Frequently Asked Questions

  • What is CVE-2023-38322?

    CVE-2023-38322 is a vulnerability in OpenNDS Captive Portal before version 10.1.2 that allows a NULL pointer dereference, leading to a Denial-of-Service condition.

  • How severe is CVE-2023-38322?

    CVE-2023-38322 has a severity rating of 7.5 (high).

  • How can CVE-2023-38322 be triggered?

    CVE-2023-38322 can be triggered with a crafted GET HTTP request with a missing User-Agent HTTP header.

  • What is the affected software version of CVE-2023-38322?

    The affected software version of CVE-2023-38322 is OpenNDS Captive Portal up to and excluding version 10.1.2.

  • Is there a fix for CVE-2023-38322?

    Yes, updating to OpenNDS Captive Portal version 10.1.2 or later fixes CVE-2023-38322.


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