unshar (unshar.c) in sharutils 4.2.1 allows local users to overwrite arbitrary files via a symlink attack on the unsh.X temporary file.Referenceshttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9613https://bugzilla.ubuntu.com/show_bug.cgi?id=8459https://exchange.xforce.ibmcloud.com/vulnerabilities/19957http://www.securityfocus.com/bid/12981https://usn.ubuntu.com/104-1/http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=302412http://www.redhat.com/support/errata/RHSA-2005-377.html
