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CVE-2021-20745

Quick assessment

Affected
Takuya Matsuyama Inkdrop
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.

Inkdrop是日本Takuya个人开发者的一个带有强大 Markdown 编辑器的笔记应用程序。 Inkdrop 存在操作系统命令注入漏洞，该漏洞源于iframe中不正确的输入验证。攻击者可利用该漏洞将专门设计的数据传递给应用程序，并在目标系统上执行任意的操作系统命令。以下产品及版本受到影响:Inkdrop: 5.0.0、5.0.1、5.1.0、5.1.1、5.1.2、5.2.0、5.2.1、5.3.0。

AI Predicted 8.8 Difficulty: Easy EPSS 0.96% · P58

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-20745

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Inkdrop 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Inkdrop是日本Takuya个人开发者的一个带有强大 Markdown 编辑器的笔记应用程序。 Inkdrop 存在操作系统命令注入漏洞，该漏洞源于iframe中不正确的输入验证。攻击者可利用该漏洞将专门设计的数据传递给应用程序，并在目标系统上执行任意的操作系统命令。以下产品及版本受到影响:Inkdrop: 5.0.0、5.0.1、5.1.0、5.1.1、5.1.2、5.2.0、5.2.1、5.3.0。
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
Takuya Matsuyama Inkdrop versions prior to v5.3.1 -

II. Public POCs for CVE-2021-20745

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-20745

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Vendor Advisories for CVE-2021-20745 (1)

Other References for CVE-2021-20745 (2)

IV. Related Vulnerabilities

Same product: Inkdrop
Same vendor: Takuya Matsuyama

V. Comments for CVE-2021-20745

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