The read_game_map function in src/terrain_translation.cpp in Wesnoth before r32987 allows remote attackers to cause a denial of service (memory consumption and daemon hang) via a map with a large (1) width or (2) height.
https://gna.org/bugs/index.php?13031
https://exchange.xforce.ibmcloud.com/vulnerabilities/49294
http://packages.debian.org/changelogs/pool/main/w/wesnoth/wesnoth_1.5.12-1/changelog
http://packages.debian.org/changelogs/pool/main/w/wesnoth/wesnoth_1.4.7-4/changelog