CVE-2018-12680: CoAPthon DoS due to Exceptions

April 8, 2019 (updated September 13, 2024)

The Serialize.deserialize() method in CoAPthon 3.1, 4.0.0, 4.0.1, and 4.0.2 mishandles certain exceptions, leading to a denial of service in applications that use this library (e.g., the standard CoAP server, CoAP client, CoAP reverse proxy, example collect CoAP server and client) when they receive crafted CoAP messages.

References

github.com/Tanganelli/CoAPthon
github.com/Tanganelli/CoAPthon/issues/135
github.com/advisories/GHSA-5xc6-fpc7-4qvg
github.com/pypa/advisory-database/tree/main/vulns/coapthon/PYSEC-2019-165.yaml
nvd.nist.gov/vuln/detail/CVE-2018-12680

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