Moodle Other Vulnerability - CVE-2012-3398
Algorithmic complexity vulnerability in Moodle 1.9.x before 1.9.19 2.0.x before 2.0.10 2.1.x before 2.1.7 and 2.2.x before 2.2.4 allows remote authenticated users to cause a denial of service (CPU consumption) by using the advanced-search feature on a database activity that has many records.