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CVE-2021-47971— My Notes Safe 5.3 Denial of Service via Buffer Overflow

CVSS 7.5 · High EPSS 0.04% · P12

Possible ATT&CK Techniques 1AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProductVersion RangeStatus
my-notes-safeMy Notes Safe5.3affected
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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)

Affected Products

VendorProductAffected VersionsCPESubscribe
my-notes-safeMy Notes Safe 5.3 -

II. Public POCs for CVE-2021-47971

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III. Intelligence Information for CVE-2021-47971

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IV. Related Vulnerabilities

Same weakness: CWE-789

V. Comments for CVE-2021-47971

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