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Simple EditorApplication · Lg

CVE-2023-40504

CRITICAL · 9.8 CVSS v3.1 Published 2024-05-03
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
High EPSS Remotely reachable No privileges Zero-click

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 · unedited
LG Simple Editor readVideoInfo Command Injection 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 readVideoInfo method. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. . Was ZDI-CAN-19953.

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 confidence

This is a command injection vulnerability in LG Simple Editor's readVideoInfo method. The flaw allows unauthenticated remote attackers to inject malicious OS commands through unsanitized user input that is passed directly to a system call, resulting in arbitrary code execution with SYSTEM-level privileges.

MitigationImplement strict input validation and sanitization on all user-supplied parameters in the readVideoInfo method, and replace unsafe system calls with parameterized alternatives or whitelisted input validation to prevent command injection.

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
Simple EditorApplication
Affected:= 3.21.0

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify LG Simple Editor is installed
    Locate the LG Simple Editor installation directory. Common paths include C:\Program Files\LG\Simple Editor or C:\Program Files (x86)\LG\Simple Editor on Windows, or /opt/lg/simple-editor on Linux. Check for the presence of the main application files (typically simple-editor.exe or a JAR file with 'simple-editor' in the name).
    Affected if LG Simple Editor software is found on the system regardless of installation path.
  2. Check the installed version
    Right-click the main executable (simple-editor.exe) or JAR file, select Properties, then go to the Details tab to view the File Version. Alternatively, open the application and navigate to Help > About, or check the version listed in an installedPrograms.txt or version.txt file within the installation directory.
    Affected if The version is exactly 3.21.0.
  3. Identify if the web service component is running
    LG Simple Editor typically runs a web server for its editor interface. Check running processes for java.exe or a process named 'simple-editor' listening on HTTP ports (commonly ports 8080, 8443, or 8090). Use command: netstat -ano | findstr LISTENING to identify listening ports, or check Services panel for any LG-related services.
    Affected if The web service component of LG Simple Editor 3.21.0 is running and accessible.
  4. Inspect web access logs for the readVideoInfo endpoint
    Locate web server logs in the LG Simple Editor logs directory (typically logs/ or access_log/ within the installation folder). Search for requests to readVideoInfo or similar video-related endpoints using: findstr /s /i "readVideoInfo" *.log
    Affected if Log entries contain requests to the readVideoInfo method with suspicious parameter values (e.g., semicolons, pipe symbols, backticks, $() command substitutions).

A system is affected if LG Simple Editor version 3.21.0 is installed and its web service component is exposed, as the vulnerable readVideoInfo method accepts unsanitized input passed directly to system calls.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement strict input validation and sanitization on all user-supplied parameters in the readVideoInfo method, and replace unsafe system calls with parameterized alternatives or whitelisted input validation to prevent command injection.

Fix this in Simple Editor Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing10.0 h
  • Review / QA6.0 h
34.0 hours of engineering $5,940
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-40504 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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