asciiview in aview 1.3.0 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/aview#####.pgm temporary file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44837
https://bugs.gentoo.org/show_bug.cgi?id=235770
https://bugs.gentoo.org/235808
http://www.securityfocus.com/bid/30885
http://www.openwall.com/lists/oss-security/2008/10/30/2
http://security.gentoo.org/glsa/glsa-200812-14.xml