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    CVE-2024-40493

    Null Pointer Dereference in `coap_client_exchange_blockwise2` function in Keith Cullen FreeCoAP 1.0 allows remote attackers to cause a denial of service and potentially execute arbitrary code via a specially crafted CoAP packet that causes `coap_msg_get_payload(resp)` to return a null pointer, which is then dereferenced in a call to `memcpy`.

    Published:Oct 22, 2024
    Last Modified:Oct 25, 2024
    EPS:Oct 22, 2024
    EPSS Score:0.01505
    CVSS Score:5.3

    Affected Products

    Vendor
    Keith-cullen
    Product
    Freecoap
    Vendor
    Keithcullen
    Product
    Freecoap

    Exploits

    https://github.com/keith-cullen/FreeCoAP/issues/37

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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