6.5
MEDIUM
CVE-2021-43129
Desire2Learn/D2L Brightspace Right Click Bypass Vulnerability (Privilege Escalation)
Description

A bypass exists for Desire2Learn/D2L Brightspace’s “Disable Right Click” option in the quizzing feature, which allows a quiz-taker to access print and copy functionality via the browser’s right click menu even when “Disable Right Click” is enabled on the quiz.

INFO

Published Date :

April 19, 2022, 1:15 p.m.

Last Modified :

Aug. 8, 2023, 2:22 p.m.

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-43129 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-43129 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 D2l brightspace
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-43129.

URL Resource
https://community.brightspace.com/s/article/retirement-notice-disable-right-click Vendor Advisory
https://github.com/Skotizo/CVE-2021-43129 Exploit Third Party Advisory
https://www.d2l.com/learning-management-system-lms/ Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 1 month, 1 week ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.

None

Updated: 6 months, 3 weeks ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.

None

Updated: 7 months, 2 weeks ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 930 different CVEs too.

Vulnerability in D2L Brightspace's Learning Management System(LMS)

cve cybersecurity exploit information-security mitre-attack vulnerability

Updated: 1 year, 11 months ago
2 stars 0 fork 0 watcher
Born at : April 12, 2022, 9:04 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-43129 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-43129 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 08, 2023

    Action Type Old Value New Value
    Changed CWE CWE-668 NVD-CWE-Other
  • Initial Analysis by [email protected]

    Apr. 27, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    Changed Reference Type https://community.brightspace.com/s/article/retirement-notice-disable-right-click No Types Assigned https://community.brightspace.com/s/article/retirement-notice-disable-right-click Vendor Advisory
    Changed Reference Type https://github.com/Skotizo/CVE-2021-43129 No Types Assigned https://github.com/Skotizo/CVE-2021-43129 Exploit, Third Party Advisory
    Changed Reference Type https://www.d2l.com/learning-management-system-lms/ No Types Assigned https://www.d2l.com/learning-management-system-lms/ Vendor Advisory
    Added CWE NIST CWE-668
    Added CPE Configuration OR *cpe:2.3:a:d2l:brightspace:20.21.7:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 21, 2022

    Action Type Old Value New Value
    Changed Description An Access Control vulnerability exists in Desire2Learn/D2L Learning Management System (LMS) 20.21.7 via the quizzing feature, which allows a remote malicious user to disable the Disable right click control. A bypass exists for Desire2Learn/D2L Brightspace’s “Disable Right Click” option in the quizzing feature, which allows a quiz-taker to access print and copy functionality via the browser’s right click menu even when “Disable Right Click” is enabled on the quiz.
  • CVE Modified by [email protected]

    Apr. 21, 2022

    Action Type Old Value New Value
    Added Reference https://community.brightspace.com/s/article/retirement-notice-disable-right-click [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-43129 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-43129 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.12 }} 0.02%

score

0.46738

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability