Moodle up to 3.5.15/3.8.6/3.9.3/3.10.0 TeX Notation Filter cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Moodle up to 3.5.15/3.8.6/3.9.3/3.10.0. The impacted element is an unknown function of the component TeX Notation Filter. Performing a manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2021-20186. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Moodle up to 3.5.15/3.8.6/3.9.3/3.10.0 (Learning Management Software). This affects an unknown code of the component TeX Notation Filter. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity.

The weakness was shared 01/29/2021 as 417170. It is possible to read the advisory at moodle.org. This vulnerability is uniquely identified as CVE-2021-20186. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 3.5.16, 3.8.7, 3.9.4 or 3.10.1 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

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: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Moodle 3.5.16/3.8.7/3.9.4/3.10.1

Timelineinfo

12/17/2020 🔍
01/29/2021 +43 days 🔍
01/29/2021 +0 days 🔍
02/21/2021 +23 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: 417170
Status: Confirmed

CVE: CVE-2021-20186 (🔍)
GCVE (CVE): GCVE-0-2021-20186
GCVE (VulDB): GCVE-100-168879

Entryinfo

Created: 01/29/2021 11:23
Updated: 02/21/2021 11:38
Changes: 01/29/2021 11:23 (39), 02/21/2021 11:34 (5), 02/21/2021 11:38 (18)
Complete: 🔍
Cache ID: 216::103

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