lib/adminlib.php in Moodle through 2.3.11, 2.4.x before 2.4.8, 2.5.x before 2.5.4, and 2.6.x before 2.6.1 logs cleartext passwords, which allows remote authenticated administrators to obtain sensitive information by reading the Config Changes Report.
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-36721
lists.fedoraproject.org/pipermail/package-announce/2014-January/127510.html
lists.fedoraproject.org/pipermail/package-announce/2014-January/127533.html
openwall.com/lists/oss-security/2014/01/20/1
www.securitytracker.com/id/1029647
moodle.org/mod/forum/discuss.php?d=252414