iplookup/index.php in Moodle through 2.4.11, 2.5.x before 2.5.9, 2.6.x before 2.6.6, and 2.7.x before 2.7.3 allows remote attackers to cause a denial of service (resource consumption) by triggering the calculation of an estimated latitude and longitude for an IP address.
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-47321
openwall.com/lists/oss-security/2014/11/17/11
github.com/moodle/moodle
github.com/moodle/moodle/commit/324b018bbce2f56198fe8808968bad6c8798710a
github.com/moodle/moodle/commit/35a60cbb382d78ddb9d54c772816db4c5007ca7e
github.com/moodle/moodle/commit/6ec47a64acf8576916c20dcbb436b0ae41a63440
github.com/moodle/moodle/commit/eb46bf2f4e80f4421255f6aee00b73448ba582a7
moodle.org/mod/forum/discuss.php?d=275158
nvd.nist.gov/vuln/detail/CVE-2014-7847
web.archive.org/web/20150914064838/www.securitytracker.com/id/1031215