Authenticated remote code execution risk in lesson
CVE-2023-5539

8.8HIGH

Key Information:

Vendor

Fedora

Status
moodle
Extra Packages for Enterprise Linux 7
Fedora
Vendor
CVE Published:
9 November 2023

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-5539?

A critical vulnerability was discovered in the Lesson activity of Moodle, exposing a risk of remote code execution. This issue primarily affects users with teacher and manager roles, allowing unauthorized access to execute arbitrary code within the system. As Moodle carries out many educational processes, this vulnerability could potentially be exploited by malicious actors to manipulate system functions. It is essential for users and administrators to be aware of this risk and to apply any available patches to secure their installations.

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Affected Version(s)

moodle 4.2.3

moodle 4.1.6

moodle 4.0.11

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-5539
Created by cli-ish

References

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=...
https://bugzilla.redhat.com/show_bug.cgi?id=2243352
issue-trackingx_refsource_REDHAT
https://moodle.org/mod/forum/discuss.php?d=451580

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

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