GHSA-q26p-9cq4-7fc2 Go Ethereum vulnerable to DoS via malicious p2p message

• Go github.com/ethereum/go-ethereum: >= 1.14.0, < 1.14.13 → fixed in 1.14.13

Impact A vulnerable node can be forced to shutdown/crash using a specially crafted message. During the peer-to-peer connection handshake, a shared secret key is computed. The implementation did not verify whether the EC public key provided by the remote party is a valid point on the secp256k1 curve. By simply sending an all-zero public key, a crash could be induced due to unexpected results from the handshake. The issue was fixed by adding a curve point validity check in https://github.com/ethereum/go-ethereum/commit/159fb1a1db551c544978dc16a5568a4730b4abf3 Patches A fix has been included in geth version 1.14.13 and onwards. Workarounds Unfortunately, no workaround is available. Credits This issue was originally reported to Polygon Security by David Matosse (@iam-ned).