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    CVE-2023-41101

    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 OpenNDS before version 10.1.3 fixed in OpenWrt master and OpenWrt 23.05 on 23. November by updating OpenNDS to version 10.2.0.

    Published:Nov 17, 2023
    Last Modified:Nov 21, 2024
    EPS:Nov 17, 2023
    EPSS Score:0.04088
    CVSS Score:9.8

    Affected Products

    Vendor
    Opennds
    Product
    Opennds

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-38822 (CVSS 7.6) — In openNDS before 11.0.0, the client_params.sh script, invoked by the openNDS daemon to serve the authenticate…
    CVE-2026-38821 (CVSS 7.1) — A heap-based buffer overflow vulnerability exists in openNDS before 11.0.0 that allows an unauthenticated atta…
    CVE-2026-38820 (CVSS 8.3) — openNDS before 11.0.0 is susceptible to unauthenticated OS command execution via shell command injection throu…
    CVE-2026-38819 (CVSS 5.3) — Multiple memory leaks in openNDS before 11.0.0 allow an unauthenticated attacker on the captive portal network…
    CVE-2024-25763 (CVSS 5.5) — openNDS 10.2.0 is vulnerable to Use-After-Free via /openNDS/src/auth.c.…
    CVE-2023-38317 (CVSS 9.8) — An issue was discovered in OpenNDS before 10.1.3. It fails to sanitize the network interface name entry in the…
    CVE-2023-38318 (CVSS 9.8) — An issue was discovered in OpenNDS before 10.1.3. It fails to sanitize the gateway FQDN entry in the configura…
    CVE-2023-38319 (CVSS 9.8) — An issue was discovered in OpenNDS before 10.1.3. It fails to sanitize the FAS key entry in the configuration …
    CVE-2023-38323 (CVSS 9.8) — An issue was discovered in OpenNDS before 10.1.3. It fails to sanitize the status path script entry in the con…
    CVE-2023-41102 (CVSS 7.5) — An issue was discovered in the captive portal in OpenNDS before version 10.1.3. It has multiple memory leaks d…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High