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Fencer Intel
high 8.8

CVE-2018-14630 json

Moodle XML import of ddwtos could lead to intentional remote code execution

published 8y ago modified 4mo ago also GHSA-c3pr-h96w-2jjg , EUVD-2022-3491

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist moodle/moodle 3.1.14, 3.3.8, 3.4.5, 3.5.2
  • moodle moodle 3.1.14, 3.3.8, 3.4.5, 3.5.2

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-14630 updated cvss 8.8

moodle: Moodle XML import of ddwtos could lead to intentional remote code execution (MSA-18-0017)

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.60% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • seclists.org https://seclists.org/fulldisclosure/2018/Sep/28 referenced PoC, tagged "exploit" by a source, unverified
  • sec-consult.com https://www.sec-consult.com/en/blog/advisories/remote-code-execution-php-unserialize-moodle-open-source-learning-platform-cve-2018-14630/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=3.5.0, <3.5.2
>=3.4.0, <3.4.5
>=3.2.0, <3.3.8
<3.1.14
3.5.2
3.4.5
3.3.8
3.1.14

Affected products

  • [UNKNOWN] moodle

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.