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    CVE-2020-24336

    An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is sane. Therefore, when copying an address of an arbitrary length, a buffer overflow can occur. This bug can be exploited whenever NAT64 is enabled.

    Published:Dec 11, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 11, 2020
    EPSS Score:0.0183
    CVSS Score:9.8

    Affected Products

    Vendor
    Contiki-ng
    Product
    Contiki-ng
    Vendor
    Contiki-os
    Product
    Contiki

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-5855 (CVSS 8.7) — Contiki-NG's LwM2M TLV parser lwm2m_tlv_read() in os/services/lwm2m/lwm2m-tlv.c ignores its caller-supplied bu…
    CVE-2023-29001 (CVSS 8.7) — Contiki-NG is an open-source, cross-platform operating system for IoT devices. The Contiki-NG operating system…
    CVE-2024-41125 (CVSS 8.3) — Contiki-NG is an open-source, cross-platform operating system for IoT devices. An out-of-bounds read of 1 byte…
    CVE-2024-41126 (CVSS 8.3) — Contiki-NG is an open-source, cross-platform operating system for IoT devices. An out-of-bounds read of 1 byte…
    CVE-2024-47181 (CVSS 7.5) — Contiki-NG is an open-source, cross-platform operating system for IoT devices. An unaligned memory access can …
    CVE-2023-50926 (CVSS 7.5) — Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bound…
    CVE-2023-50927 (CVSS 8.6) — Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An attacker can…
    CVE-2023-48229 (CVSS 7) — Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bound…

    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