engine/server.cpp in Sauerbraten 2006_02_28, as derived from the Cube engine, allows remote attackers to cause a denial of service (segmentation fault) via a client that does not completely join the game and times out, which results in a null pointer dereference.

Buffer overflow in the sgetstr function in shared/cube.h in Sauerbraten 2006_02_28 and earlier, as derived from the Cube engine, allows remote attackers to execute arbitrary code via long streams of input data.

The (1) sgetstr and (2) getint functions in Sauerbraten 2006_02_28, as derived from the Cube engine, allow remote attackers to cause a denial of service (segmentation fault) via long streams of input data that trigger an out-of-bounds read, as demonstrated using SV_EXT tag data in the Cube engine, which is not properly handled by getint.

Sauerbraten 2006_02_28, as derived from the Cube engine, allows remote attackers to cause a denial of service (client exit) by forcing the server to change to a map (ogz) file whose name contains ".." sequences and has a certain length that prevents the addition of the ".ogz" extension.