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CVE-2021-20185

Quick assessment

Affected
n/a moodle
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Moodle是一套免费、开源的电子学习软件平台，也称课程管理系统、学习管理系统或虚拟学习环境。 Moodle 3.10.1, 3.9.4, 3.8.7 and 3.5.16之前版本存在资源管理错误漏洞，该漏洞允许通过个人消息拒绝服务。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.38% · P71
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I. Basic Information for CVE-2021-20185

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that messaging did not impose a character limit when sending messages, which could result in client-side (browser) denial of service for users receiving very large messages.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Moodle 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Moodle是一套免费、开源的电子学习软件平台，也称课程管理系统、学习管理系统或虚拟学习环境。 Moodle 3.10.1, 3.9.4, 3.8.7 and 3.5.16之前版本存在资源管理错误漏洞，该漏洞允许通过个人消息拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- moodle moodle 3.10.1, moodle 3.9.4, moodle 3.8.7, moodle 3.5.16 -

II. Public POCs for CVE-2021-20185

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20185

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Same Patch Batch · n/a · 2021-01-28 · 22 CVEs total

CVE-2021-20186 Moodle 跨站脚本漏洞
CVE-2020-8585 Netapp NetApp OnCommand Unified Manager 后置链接漏洞
CVE-2019-25016 Duncaen OpenDoas 安全漏洞
CVE-2021-3160 Aca Assurex Rentes 代码问题漏洞
CVE-2021-3337 MyBB Hide-Thread-Content plugin 安全漏洞
CVE-2020-35754 Opensolution Quick.Cart和Opensolution Quick.Cms 注入漏洞
CVE-2020-36115 EGavilan Media CRUD Operation 跨站脚本漏洞
CVE-2020-35517 QEMU 访问控制错误漏洞
CVE-2020-1725 Red Hat Keycloak 访问控制错误漏洞
CVE-2021-25647 Testesdecodigogratis Testes de Codigo 跨站脚本漏洞
CVE-2021-20184 Moodle 信息泄露漏洞
CVE-2020-25782 Accfly Wireless Security IR Camera System 720P Software 缓冲区错误漏洞
CVE-2021-20183 Moodle 跨站脚本漏洞
CVE-2021-20187 Moodle 代码注入漏洞
CVE-2021-22875 Revive Adserver 跨站脚本漏洞
CVE-2021-22874 Revive Adserver 跨站脚本漏洞
CVE-2020-13569 OpenEMR 跨站请求伪造漏洞
CVE-2020-35124 Mautic 跨站脚本漏洞
CVE-2020-25785 Accfly Wireless Security IR Camera System 720P Software 缓冲区错误漏洞
CVE-2020-25784 Accfly Wireless Security IR Camera System 720P Software 缓冲区错误漏洞

Showing top 20 of 22 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: moodle
Same vendor: n/a
Same weakness: CWE-400

V. Comments for CVE-2021-20185

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