CVE-2023-40500
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedLG Simple Editor copyContent Exposed Dangerous Function Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of LG Simple Editor. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the copyContent command. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. . Was ZDI-CAN-19944.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceLG Simple Editor contains a path traversal vulnerability in its copyContent command. The application fails to validate user-supplied paths before using them in file operations, allowing an attacker to manipulate file paths and achieve remote code execution. Since no authentication is required and the vulnerability executes in SYSTEM context, an attacker can gain full control of the affected system.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 3.21.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify LG Simple Editor installationSearch the system for LG Simple Editor installation directories or check common program installation locations (e.g., C:\Program Files\, C:\Program Files (x86)\, or custom installation paths). Look for folders named 'LG Simple Editor' or similar.Affected if LG Simple Editor version 3.21.0 is found installed on the system
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Determine installed versionLocate the main executable or application file for LG Simple Editor. Right-click the executable, select Properties, and check the Version tab. Alternatively, open the application and navigate to Help > About to view the version number.Affected if The installed version is exactly 3.21.0 (no patches or updates applied)
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Verify copyContent functionality is exposedInspect the application's web endpoints, API configuration, or command interface for the copyContent function. Check if this command is accessible via HTTP/HTTPS requests or through the application interface without authentication.Affected if The copyContent command is accessible without requiring authentication
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Check for signs of path traversal exploitationReview application logs, web server logs, or system event logs for unusual file access patterns. Look for indicators such as requests containing '../' sequences, unexpected file creations in system directories, or modifications to files outside the intended application directory.Affected if Log evidence shows path traversal attempts or unauthorized file access through the copyContent function
A system is affected if LG Simple Editor version 3.21.0 is installed and the copyContent command is accessible without authentication.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply vendor patches or updates for LG Simple Editor immediately. If no patch is available, disable or restrict access to the copyContent functionality at the network level until a fix can be implemented. Implement strict input validation and path sanitization on all file operation functions.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-40500 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-40500 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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