Wesnoth UTF-8 denial of service

wesnoth-utf8-dos (37047) The risk level is classified as LowLow Risk

Description:

Wesnoth is vulnerable to a denial of service, caused by an unspecified error when processing UTF-8 strings in the multiplayer engine. A remote attacker could exploit this vulnerability using invalid UTF-8 strings to crash the Wesnoth client.

Platforms Affected:

  • Debian, Debian Linux 3.1
  • Debian, Debian Linux 4.0
  • Wesnoth, Wesnoth prior to 1.2.7

Remedy:

Upgrade to the latest version of Wesnoth (1.2.7 or later), available from the Wesnoth Web site. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Denial of Service

References:

  • Battle for Wesnoth Web site, Wesnoth at http://www.wesnoth.org/.
  • SVN Repositories at Gna!, wesnoth: tags/1.2.7/changelog at http://svn.gna.org/viewcvs/wesnoth/tags/1.2.7/changelog?rev=20982&view=markup.
  • BID-25995: Wesnoth Client UTF-8 Remote Denial of Service Vulnerability
  • CVE-2007-3917: 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.
  • DSA-1386: wesnoth -- programming error
  • SA27137: Wesnoth UTF-8 Denial of Service Vulnerability
  • VUPEN/ADV-2007-3449: Wesnoth truncate_message() UTF-8 Data Denial of Service Vulnerability

Reported:

Oct 09, 2007

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