Directory traversal vulnerability in src/http/modules/ngx_http_dav_module.c in nginx (aka Engine X) before 0.7.63, and 0.8.x before 0.8.17, allows remote authenticated users to create or overwrite arbitrary files via a .. (dot dot) in the Destination HTTP header for the WebDAV (1) COPY or (2) MOVE method.
http://www.openwall.com/lists/oss-security/2009/11/23/10
http://marc.info/?l=oss-security&m=125897327321676&w=2
http://marc.info/?l=oss-security&m=125900327409842&w=2
http://marc.info/?l=oss-security&m=125897425223039&w=2
http://www.openwall.com/lists/oss-security/2009/11/20/1
http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0379.html
http://secunia.com/advisories/36818