4.3
MEDIUM CVSS 3.1
CVE-2021-20283
Moodle Information Disclosure Vulnerability
Description

The web service responsible for fetching other users' enrolled courses did not validate that the requesting user had permission to view that information in each course in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.

INFO

Published Date :

March 15, 2021, 10:15 p.m.

Last Modified :

Nov. 21, 2024, 5:46 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2021-20283 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 Moodle moodle
1 Fedoraproject fedora
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
Follow the instructions below to mitigate the CVE-2021-20283 vulnerability.
Update the affected moodle package.
Public PoC/Exploit Available at Github

CVE-2021-20283 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

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-2021-20283.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1939051 Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/
https://moodle.org/mod/forum/discuss.php?d=419654 Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1939051 Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/
https://moodle.org/mod/forum/discuss.php?d=419654 Patch Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20283 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-2021-20283 weaknesses.

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).

Profile Photo
jev770/badmoodle-scan

Сканування за допомогою ПЗ Badmoodle системи дистанційного навчання ДУІТЗ

Updated: 1 year, 2 months ago
0 stars 0 fork 0 watcher
Born at : June 19, 2024, 7:56 a.m. This repo has been linked 181 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-2021-20283 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-20283 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1939051
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/
    Added Reference https://moodle.org/mod/forum/discuss.php?d=419654
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/ [No types assigned]
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/
  • Reanalysis by [email protected]

    Aug. 05, 2022

    Action Type Old Value New Value
    Added CWE NIST CWE-862
  • Modified Analysis by [email protected]

    Mar. 23, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/ Mailing List, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 23, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 22, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1939051 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1939051 Issue Tracking, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/ Third Party Advisory
    Changed Reference Type https://moodle.org/mod/forum/discuss.php?d=419654 No Types Assigned https://moodle.org/mod/forum/discuss.php?d=419654 Patch, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (excluding) 3.5.17 *cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* versions from (including) 3.8.0 up to (excluding) 3.8.8 *cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* versions from (including) 3.9.0 up to (excluding) 3.9.5 *cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* versions from (including) 3.10.0 up to (excluding) 3.10.2
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 19, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/ [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.
Vulnerability Scoring Details
Base CVSS Score: 4.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 4
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

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

0.27 }} -0.02%

score

0.49925

percentile