Buffer overflow in Pico Server (pServ) 2.0 beta 1 through beta 5 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a 1024-byte TCP stream message which triggers an off-by-one buffer overflow or (2) a long method name in an HTTP request (3) a long version number in an HTTP request (4) a long User-Agent header or (5) a long file path.