Moodle 3.10.1 Additional HTML Section Header/Footer HTML injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.4$5k-$25k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Moodle 3.10.1. The affected element is an unknown function of the component Additional HTML Section. Performing a manipulation of the argument Header/Footer results in HTML injection. This vulnerability is identified as CVE-2021-27131. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Moodle 3.10.1 (Learning Management Software). It has been classified as problematic. This affects an unknown code of the component Additional HTML Section. The manipulation of the argument Header/Footer with an unknown input leads to a html injection 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 summary by CVE is:

Moodle 3.10.1 is vulnerable to persistent/stored cross-site scripting (XSS) due to the improper input sanitization on the "Additional HTML Section" via "Header and Footer" parameter in /admin/settings.php. This vulnerability is leading an attacker to steal admin and all user account cookies by storing the malicious XSS payload in Header and Footer.

The weakness was released 05/17/2023. This vulnerability is uniquely identified as CVE-2021-27131 since 02/10/2021. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/09/2023). The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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

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

Productinfo

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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: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: HTML injection
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/10/2021 🔍
05/17/2023 +825 days 🔍
05/17/2023 +0 days 🔍
06/09/2023 +23 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: github.com
Status: Not defined

CVE: CVE-2021-27131 (🔍)
GCVE (CVE): GCVE-0-2021-27131
GCVE (VulDB): GCVE-100-229191

Entryinfo

Created: 05/17/2023 07:15
Updated: 06/09/2023 20:42
Changes: 05/17/2023 07:15 (38), 06/09/2023 20:34 (1), 06/09/2023 20:42 (11)
Complete: 🔍
Cache ID: 216::103

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