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THREATINT
PUBLISHED

CVE-2024-40493



Assignermitre
Reserved2024-07-05
Published2024-10-22
Updated2024-10-23

Description

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`.

References

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

https://gist.github.com/dqp10515/fe80005e2fb58ed8ada178ac017e4ad4

cve.org CVE-2024-40493

nvd.nist.gov CVE-2024-40493

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