Merkaartor 0.14 allows local users to append data to arbitrary files via a symlink attack on the /tmp/merkaartor.log temporary file.
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00870.html
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00869.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/53486
http://www.securityfocus.com/bid/36529
http://trac.openstreetmap.org/ticket/2320