VDB-208562 · CVE-2021-36568 · GCVE-0-2021-36568

Moodle 3.9.7/3.10.4/3.11 Course cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Moodle 3.9.7/3.10.4/3.11 and classified as problematic. This affects an unknown part of the component Course Handler. Such manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2021-36568. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Moodle 3.9.7/3.10.4/3.11 (Learning Management Software) and classified as problematic. Affected by this issue is an unknown code of the component Course Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

In certain Moodle products after creating a course, it is possible to add in a arbitrary "Topic" a resource, in this case a "Database" with the type "Text" where its values "Field name" and "Field description" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.

The weakness was disclosed 09/14/2022. The advisory is available at blog.hackingforce.com.br. This vulnerability is handled as CVE-2021-36568 since 07/12/2021. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/17/2022). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Learning Management Software

Name

Moodle

Version

License

open-source

Website

Product: https://moodle.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/12/2021 🔍
09/14/2022 +429 days 🔍
09/14/2022 +0 days 🔍
10/17/2022 +33 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: FEDORA-2022-1c77803b43
Status: Not defined

CVE: CVE-2021-36568 (🔍)
GCVE (CVE): GCVE-0-2021-36568
GCVE (VulDB): GCVE-100-208562

Entryinfo

Created: 09/14/2022 12:23
Updated: 10/17/2022 09:54
Changes: 09/14/2022 12:23 (38), 10/17/2022 09:51 (1), 10/17/2022 09:54 (11)
Complete: 🔍
Cache ID: 216::103