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p2p/rlpx: 2KB maximum size for handshake messages (#30029)

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Co-authored-by: Felix Lange <fjl@twurst.com>
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David Theodore 2024-06-20 07:08:54 -05:00 committed by GitHub
parent 00675c5876
commit 27654d3022
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1 changed files with 5 additions and 0 deletions
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5
p2p/rlpx/rlpx.go
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@ -604,6 +604,11 @@ func (h *handshakeState) readMsg(msg interface{}, prv *ecdsa.PrivateKey, r io.Re
} }
size := binary.BigEndian.Uint16(prefix) size := binary.BigEndian.Uint16(prefix)
// baseProtocolMaxMsgSize = 2 * 1024
if size > 2048 {
return nil, errors.New("message too big")
}
// Read the handshake packet. // Read the handshake packet.
packet, err := h.rbuf.read(r, int(size)) packet, err := h.rbuf.read(r, int(size))
if err != nil { if err != nil {