---
title: "CVE-2018-14630\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-14630?format=md
keywords: index, follow
---

# CVE-2018-14630

Publication date 17 September 2018

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-14630?format=md#impact-score)

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## 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.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2018-14630?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| moodle | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 23.04 lunar | Not in release |
| 22.10 kinetic | Not in release |
| 22.04 LTS jammy | Not in release |
| 21.10 impish | Not in release |
| 21.04 hirsute | Not in release |
| 20.10 groovy | Not in release |
| 20.04 LTS focal | Not in release |
| 19.10 eoan | Ignored end of life |
| 19.04 disco | Ignored end of life |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [msalvatore](https://launchpad.net/~msalvatore)

ddwtos is not available in 2.9 and earlier without the module plugins database
Public PoC fails to exploit the vulnerability on xenial and later.

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.8 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14630)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-14630)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-14630)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-14630)

### Other references

* <http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-62880>
* <https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14630>
* <https://moodle.org/mod/forum/discuss.php?d=376023>
* <https://claudiospiess.com/posts/exploiting-moodle/>
* <https://www.cve.org/CVERecord?id=CVE-2018-14630>