119 787
Advisory Published


First published: Fri Nov 17 2023(Updated: )

An issue was discovered in the captive portal in OpenNDS before version 10.1.3. get_query in http_microhttpd.c does not validate the length of the query string of GET requests. This leads to a stack-based buffer overflow in versions 9.x and earlier, and to a heap-based buffer overflow in versions 10.x and later. Attackers may exploit the issue to crash OpenNDS (Denial-of-Service condition) or to inject and execute arbitrary bytecode (Remote Code Execution).


Affected SoftwareAffected VersionHow to fix
Opennds Opennds>=9.0.0<10.1.3

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Frequently Asked Questions

  • What is the severity of CVE-2023-41101?

    The severity of CVE-2023-41101 is critical with a CVSS score of 9.8.

  • How can I fix the vulnerability CVE-2023-41101?

    To fix the vulnerability CVE-2023-41101, you need to update OpenNDS to version 10.1.3 or later.

  • What is the affected software for CVE-2023-41101?

    The affected software for CVE-2023-41101 is OpenNDS version 9.x and earlier, and versions 10.x up to and including 10.1.2.

  • What is the CWE ID for CVE-2023-41101?

    The CWE ID for CVE-2023-41101 is CWE-119 and CWE-787.

  • Where can I find more information about CVE-2023-41101?

    You can find more information about CVE-2023-41101 on the GitHub page of OpenNDS.


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