Substituting URL in portfolios users can instantiate any class, this can also be exploited by users who are logged in as guests to create a DDoS attack
| Severity/Risk: | Serious |
| Versions affected: | 3.4 to 3.4.2, 3.3 to 3.3.5, 3.2 to 3.2.8, 3.1 to 3.1.11 and earlier unsupported versions |
| Versions fixed: | 3.5, 3.4.3, 3.3.6, 3.2.9 and 3.1.12 |
| Reported by: | Brendan Cox |
| Workaround: | Disable portfolios until the fix is applied. Portfolios are disabled by default in Moodle |
| CVE identifier: | CVE-2018-1137 |
| Changes (master): | http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-62233 |
| Tracker issue: | MDL-62233 Portfolio script allows instantiation of class chosen by user |