CVE-2021-3943CWE-20

A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions

published November 22, 2021

CVSS
—
EPSS
2%
Percentile
83.9
In the wild
Unconfirmed
What it is

🚨 A backup restore in Moodle could unleash a world of chaos if not handled carefully! Think of it like regifting a mystery box without checking its contents first—a recipient could end up with anything, including a ticking time bomb! 🎁💣 An attacker could exploit this flaw to execute malicious code on your server, turning a simple backup restore into an absolute disaster. Imagine your virtual classroom being hijacked, with private data exposed and system integrity compromised!

Put simply

Think of it like regifting a mystery box without checking its contents first—a recipient could end up with anything, including a ticking time bomb! 🎁💣 This vulnerability allows remote code execution when restoring backup files in affected versions of Moodle, specifically from 3.11 to 3.11.3, 3.10 to 3.10.7, and 3.9 to 3.9.10.

What to do

An attacker could exploit this flaw to execute malicious code on your server, turning a simple backup restore into an absolute disaster. Imagine your virtual classroom being hijacked, with private data exposed and system integrity compromised! To safeguard against this risk, update your Moodle installation to the latest version immediately. Ensure that backup files are thoroughly scanned before restoring, and consider limiting access to sensitive backup functions. 🛡️ You've got this! With these actions, you can keep your Moodle environment secure and your learners safe. 🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02395 · 83.9th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2021-11-22T15:59Z
EPSS history
Timeline
  • 22 NOV 15:59Z
    A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions
    cvelistv5