GNU Wget 1.12 and earlier uses a server-provided filename instead of the original URL to determine the destination filename of a download, which allows remote servers to create or overwrite arbitrary files via a 3xx redirect to a URL with a .wgetrc filename followed by a 3xx redirect to a URL with a crafted filename, and possibly execute arbitrary code as a consequence of writing to a dotfile in a home directory.
https://bugzilla.redhat.com/show_bug.cgi?id=602797
https://bugzilla.redhat.com/show_bug.cgi?id=591580
http://www.securityfocus.com/bid/65722
http://www.ocert.org/advisories/ocert-2010-001.html
http://rhn.redhat.com/errata/RHSA-2014-0151.html
http://marc.info/?l=oss-security&m=127611288927500&w=2
http://marc.info/?l=oss-security&m=127441275821210&w=2
http://marc.info/?l=oss-security&m=127432968701342&w=2
http://marc.info/?l=oss-security&m=127427572721591&w=2
http://marc.info/?l=oss-security&m=127422615924593&w=2
http://marc.info/?l=oss-security&m=127416905831994&w=2
http://marc.info/?l=oss-security&m=127412569216380&w=2
http://marc.info/?l=oss-security&m=127411372529485&w=2
http://lists.gnu.org/archive/html/bug-wget/2010-05/msg00034.html
http://lists.gnu.org/archive/html/bug-wget/2010-05/msg00033.html
http://lists.gnu.org/archive/html/bug-wget/2010-05/msg00032.html
http://lists.gnu.org/archive/html/bug-wget/2010-05/msg00031.html
http://lists.gnu.org/archive/html/bug-wget/2010-05/msg00023.html