Public bug reported:

Binary package hint: wesnoth

The multiplayer engine in Wesnoth before 1.2.7 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.

** Affects: wesnoth (Ubuntu)
     Importance: High
     Assignee: Emilio Pozuelo Monfort (pochu)
         Status: In Progress

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denial of service in wesnoth client and server prior 1.2.7 release
https://bugs.launchpad.net/bugs/158414
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