Description
moodle before versions 3.5.2, 3.4.5, 3.3.8, 3.1.14 is vulnerable to an XML import of ddwtos could lead to intentional remote code execution. When importing legacy 'drag and drop into text' (ddwtos) type quiz questions, it was possible to inject and execute PHP code from within the imported questions, either intentionally or by importing questions from an untrusted source.
CVSS breakdown
CVSS 3.0
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Unknown / moodle3.5.2 – 3.5.2
- Unknown / moodle3.4.5 – 3.4.5
- Unknown / moodle3.3.8 – 3.3.8
- Unknown / moodle3.1.14 – 3.1.14
References
- MISChttp://www.securityfocus.com/bid/105354
- MISChttp://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-62880
- MISChttps://moodle.org/mod/forum/discuss.php?d=376023
- MAILING_LISThttps://seclists.org/fulldisclosure/2018/Sep/28
- VENDOR_ADVISORYhttps://www.sec-consult.com/en/blog/advisories/remote-code-execution-php-unserialize-moodle-open-source-learning-platform-cve-2018-14630/
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14630