curl: Curl parse_connect_to_string Heap-Overread Leading to Denial of Service via CURLOPT_CONNECT_TO

Summary: A heap-buffer-overread occurs in Curl's parseconnecttostring function when using the CURLOPTCONNECTTO option with crafted input. This can lead to a segmentation fault and crash of the application, resulting in a denial-of-service. The issue is triggered by malformed host strings containi...