webserver.c in mt-dappd in Firefly Media Server 0.2.4 and earlier allows remote attackers to cause a denial of service (NULL dereference and daemon crash) via a stats method action to /xml-rpc with (1) an empty Authorization header line, which triggers a crash in the ws_decodepassword function; or (2) a header line without a ':' character, which triggers a crash in the ws_getheaders function.

Format string vulnerability in the ws_addarg function in webserver.c in mt-dappd in Firefly Media Server 0.2.4 and earlier allows remote attackers to execute arbitrary code via a stats method action to /xml-rpc with format string specifiers in the (1) username or (2) password portion of base64-encoded data on the "Authorization: Basic" HTTP header line.