msgchk in Digital UNIX 4.0G and earlier allows a local user to read the first line of arbitrary files via a symlink attack on the .mh_profile file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/7102
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-1073
http://www.securityfocus.com/bid/3320