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CVE-2021-47970— Macaron Notes 5.5 Denial of Service via Buffer Overflow

Quick assessment

Affected
Macaron Notes Macaron Notes
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.

Macaron Notes是Macaron公司的一款支持便签记录、日程整理与个性化主题管理的笔记应用。 Macaron Notes 5.5版本存在安全漏洞，该漏洞源于允许攻击者通过创建包含超长字符串的笔记导致拒绝服务，攻击者可生成包含350000个重复字符的有效载荷并粘贴到笔记字段中触发应用崩溃和功能停止。

CVSS 7.5 · High EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Macaron Notes Macaron Notes 5.5 affected
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I. Basic Information for CVE-2021-47970

Vulnerability Information
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Vulnerability Title
Macaron Notes 5.5 Denial of Service via Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
Macaron Notes 5.5 contains a denial of service vulnerability that allows attackers to crash the application by creating notes with excessively long character strings. Attackers can generate a payload containing 350000 repeated characters and paste it into a note field to trigger application crash and stop functionality.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Macaron Notes 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Macaron Notes是Macaron公司的一款支持便签记录、日程整理与个性化主题管理的笔记应用。 Macaron Notes 5.5版本存在安全漏洞，该漏洞源于允许攻击者通过创建包含超长字符串的笔记导致拒绝服务，攻击者可生成包含350000个重复字符的有效载荷并粘贴到笔记字段中触发应用崩溃和功能停止。
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
Macaron Notes Macaron Notes 5.5 -

II. Public POCs for CVE-2021-47970

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III. Intelligence Information for CVE-2021-47970

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Vendor Advisories for CVE-2021-47970 (1)

Exploits & Public PoCs for CVE-2021-47970 (1)

IV. Related Vulnerabilities

Same weakness: CWE-789

V. Comments for CVE-2021-47970

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