The (1) ecryptfs-setup-private, (2) ecryptfs-setup-confidential, and (3) ecryptfs-setup-pam-wrapped.sh scripts in ecryptfs-utils 45 through 61 in eCryptfs place cleartext passwords on command lines, which allows local users to obtain sensitive information by listing the process.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9607
https://launchpad.net/bugs/287908
https://exchange.xforce.ibmcloud.com/vulnerabilities/46073
http://www.openwall.com/lists/oss-security/2008/10/29/7
http://www.openwall.com/lists/oss-security/2008/10/29/4
http://www.openwall.com/lists/oss-security/2008/10/23/3
http://secunia.com/advisories/36552
http://secunia.com/advisories/32382