Buffer overflow in Freeciv 2.1.0-beta1 and earlier, and SVN 15 Jul 2006 and earlier, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a (1) negative chunk_length or a (2) large chunk->offset value in a PACKET_PLAYER_ATTRIBUTE_CHUNK packet in the generic_handle_player_attribute_chunk function in common/packets.c, and (3) a large packet->length value in the handle_unit_orders function in server/unithand.c.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27956
https://exchange.xforce.ibmcloud.com/vulnerabilities/27955
http://www.vupen.com/english/advisories/2006/2942
http://www.securityfocus.com/archive/1/441042/100/0/threaded
http://www.mandriva.com/security/advisories?name=MDKSA-2006:135
http://www.debian.org/security/2006/dsa-1142
http://securityreason.com/securityalert/1296
http://secunia.com/advisories/21352