mnet/lib.php in Moodle 1.8 before 1.8.11 and 1.9 before 1.9.7, when MNET services are enabled, does not properly check permissions, which allows remote authenticated servers to execute arbitrary MNET functions.
cvs.moodle.org/moodle/mnet/lib.php?r1=1.16.2.10&r2=1.16.2.11
cvs.moodle.org/moodle/mnet/lib.php?r1=1.9.2.7&r2=1.9.2.8
docs.moodle.org/en/Moodle_1.8.11_release_notes
docs.moodle.org/en/Moodle_1.9.7_release_notes
moodle.org/mod/forum/discuss.php?d=139106
secunia.com/advisories/37614
www.securityfocus.com/bid/37244
www.vupen.com/english/advisories/2009/3455
www.redhat.com/archives/fedora-package-announce/2009-December/msg00704.html
www.redhat.com/archives/fedora-package-announce/2009-December/msg00730.html
www.redhat.com/archives/fedora-package-announce/2009-December/msg00751.html