Argument injection vulnerability in greylistclean.cron in sa-exim 4.2 allows remote attackers to delete arbitrary files via an email with a To field that contains a filename separated by whitespace, which is not quoted when greylistclean.cron provides the argument to the rm command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25286
http://www.vupen.com/english/advisories/2006/0941
http://www.securityfocus.com/bid/17110
http://secunia.com/advisories/19225
http://marc.merlins.org/linux/exim/files/sa-exim-cvs/Changelog.html