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fixing integer overflow in websocket.c #435

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fixing integer overflow in websocket.c #435

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5 changes: 5 additions & 0 deletions src/websocket.c
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Original file line number Diff line number Diff line change
Expand Up @@ -547,6 +547,11 @@ ws_status ws_read_frame_length(ws_t self) {
payload_length <<= 8;
payload_length |= (unsigned char)*in_head++;
}
if (payload_length > (1ULL << 26)) {
return self->on_error(self,
"Extended payload_length %zu exceeds server limit",
payload_length);
}
}
my->frame_length = 2 + payload_n + (is_masking ? 4 : 0) + payload_length;

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