The multiplayer engine in Wesnoth 1.2.x before 1.2.7 and 1.3.x before 1.3.9 allows remote servers to cause a denial of service (crash) via a long message with multibyte characters that can produce an invalid UTF-8 string after it is truncated, which triggers an uncaught exception, involving the truncate_message function in server/server.cpp. NOTE: this issue affects both clients and servers.

References

• https://nvd.nist.gov/vuln/detail/CVE-2007-3917
• https://bugzilla.redhat.com/show_bug.cgi?id=324841
• https://exchange.xforce.ibmcloud.com/vulnerabilities/37047
• https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00194.html
• http://osvdb.org/41711
• http://secunia.com/advisories/27137
• http://secunia.com/advisories/27218
• http://secunia.com/advisories/27241
• http://svn.gna.org/viewcvs/wesnoth/tags/1.2.7/changelog?rev=20982&view=download
• http://www.debian.org/security/2007/dsa-1386
• http://www.securityfocus.com/bid/25995
• http://www.vupen.com/english/advisories/2007/3449
• http://www.wesnoth.org/forum/viewtopic.php?p=256618
• http://www.wesnoth.org/forum/viewtopic.php?t=18188