mapserv in MapServer 4.x before 4.10.4 and 5.x before 5.2.2 allows remote attackers to read arbitrary invalid .map files via a full pathname in the map parameter, which triggers the display of partial file contents within an error message, as demonstrated by a /tmp/sekrut.map symlink.
lists.osgeo.org/pipermail/mapserver-users/2009-March/060600.html
secunia.com/advisories/34520
secunia.com/advisories/34603
trac.osgeo.org/mapserver/ticket/2941
www.debian.org/security/2009/dsa-1914
www.positronsecurity.com/advisories/2009-000.html
www.securityfocus.com/archive/1/502271/100/0/threaded
www.securityfocus.com/bid/34306
www.securitytracker.com/id?1021952
www.redhat.com/archives/fedora-package-announce/2009-April/msg00147.html
www.redhat.com/archives/fedora-package-announce/2009-April/msg00170.html