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    CVE-2021-45937

    wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitType and MqttClient_Connect).

    Published:Dec 31, 2021
    Last Modified:Nov 21, 2024
    EPS:Dec 31, 2021
    EPSS Score:0.0021
    CVSS Score:5.5

    Affected Products

    Vendor
    Wolfssl
    Product
    Wolfmqtt

    Exploits

    https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39083https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wolfmqtt/OSV-2021-1349.yamlhttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39083https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wolfmqtt/OSV-2021-1349.yaml

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2021-45932 (CVSS 5.5) — wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow (4 bytes) in MqttDecode_Publish (called from MqttClient_…
    CVE-2021-45933 (CVSS 5.5) — wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow (8 bytes) in MqttDecode_Publish (called from MqttClient_…
    CVE-2021-45934 (CVSS 5.5) — wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_Handl…
    CVE-2021-45936 (CVSS 5.5) — wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttDecode_Disconnect (called from MqttClient_DecodeP…
    CVE-2021-45938 (CVSS 5.5) — wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitT…
    CVE-2021-45939 (CVSS 5.5) — wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttClient_DecodePacket (called from MqttClient_WaitT…

    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