libsoup: NULL pointer dereference in soup_message_headers_get_content_disposition when "filename" parameter is present, but has no value in Content-Disposition header

A flaw was found in libsoup, where the soupmessageheadersgetcontentdisposition function is vulnerable to a NULL pointer dereference. This flaw allows a malicious HTTP peer to crash a libsoup client or server that uses this function...