CVE-2021-47971— My Notes Safe 5.3 Denial of Service via Buffer Overflow
Possible ATT&CK Techniques 1AI
T1496 · Resource HijackingAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| my-notes-safe | My Notes Safe | 5.3 | affected |
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I. Basic Information for CVE-2021-47971
Vulnerability Information
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Vulnerability Title
My Notes Safe 5.3 Denial of Service via Buffer Overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
My Notes Safe 5.3 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的内存分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
My Notes Safe 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
My Notes Safe是GuiWei个人开发者的一款支持加密笔记存储与隐私信息保护的安全记事应用。 My Notes Safe 5.3版本存在安全漏洞，该漏洞源于允许攻击者通过粘贴超长字符串到笔记字段导致拒绝服务，攻击者可生成包含350000个重复字符的有效载荷并两次粘贴到新笔记中触发应用崩溃。
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 |
|---|---|---|---|---|
| my-notes-safe | My Notes Safe | 5.3 | - |
II. Public POCs for CVE-2021-47971
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-789
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Sticky Notes & Color Widgets 1.4.2 Denial of Service - CVE-2021-47970
Macaron Notes 5.5 Denial of Service via Buffer Overflow
V. Comments for CVE-2021-47971
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