CVE-2024-40493
Critical
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`.
SeverityCritical
CVSS9.8
Exploit probability—
ProductKeith-cullen Freecoap
PublishedOct 22, 2024
First seenOct 22, 2024
Weakness typeCWE-476NULL pointer dereference
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| keith-cullen freecoap | 1.0 | — |
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