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Freeciv: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200603-11 / freeciv
Release Date March 16, 2006
Latest Revision March 16, 2006: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
games-strategy/freeciv < 2.0.8 >= 2.0.8 All supported architectures

Related bugreports: #125304


A memory allocation bug in Freeciv allows a remote attacker to perform a Denial of Service attack.

2.  Impact Information


Freeciv is an open source turn-based multiplayer strategy game, similar to the famous Civilization series.


Luigi Auriemma discovered that Freeciv could be tricked into the allocation of enormous chunks of memory when trying to uncompress malformed data packages, possibly leading to an out of memory condition which causes Freeciv to crash or freeze.


A remote attacker could exploit this issue to cause a Denial of Service by sending specially crafted data packages to the Freeciv game server.

3.  Resolution Information


Play solo games or restrict your multiplayer games to trusted parties.


All Freeciv users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=games-strategy/freeciv-2.0.8"

4.  References


Page updated March 16, 2006

Summary: This is a Gentoo Linux Security Advisory

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