The ".encfs6.xml" configuration file in encfs before 1.7.5 allows remote attackers to access sensitive data by setting "blockMACBytes" to 0 and adding 8 to "blockMACRandBytes".
https://security.gentoo.org/glsa/201512-09
https://bugzilla.redhat.com/show_bug.cgi?id=1097537
http://www.openwall.com/lists/oss-security/2014/05/14/2
http://lists.opensuse.org/opensuse-updates/2017-01/msg00090.html