CVE-2023-5636
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 · uneditedUnrestricted Upload of File with Dangerous Type vulnerability in ArslanSoft Education Portal allows Command Injection. This issue affects Education Portal: before v1.1.
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 · moderate confidenceUnrestricted file upload vulnerability in ArslanSoft Education Portal allows attackers to upload malicious files (e.g., PHP shells) that can be executed on the server, leading to command injection. Attackers can potentially take complete control of the affected system by uploading and executing arbitrary code.
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< 1.1CVSS 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 the installed version of ArslanSoft Education PortalLocate the version identifier in the application source code, typically found in a configuration file, README, or the main application header (e.g., version.php, about page, or meta tags). Compare this version number against the affected range: versions prior to 1.1 are vulnerable.Affected if The installed version is any version of ArslanSoft Education Portal below 1.1.
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Verify if file upload functionality is present and accessibleLocate any file upload forms or endpoints within the Education Portal application. This typically involves reviewing the application's source code for HTML forms with enctype='multipart/form-data' or POST requests handling file uploads. Check for upload-related controllers, models, or routes.Affected if The file upload functionality exists and is accessible to users without administrative restrictions.
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Inspect upload directory configurationExamine the web server configuration and application settings to determine where uploaded files are stored. Check if upload directories are placed within the web root (accessible via HTTP) versus outside the web root. Also verify whether the web server is configured to execute scripts (e.g., PHP, CGI) in the upload directory.Affected if Uploaded files are stored within the web root and the web server allows script execution in that directory.
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Check for existing malicious uploaded filesScan the upload directories (identified in the previous step) for suspicious file types with executable extensions (e.g., .php, .phtml, .php5, .phar, .exe, .sh). Review file modification dates and contents for signs of web shells or backdoors.Affected if Any PHP files or other executable scripts are found in the upload directory that were not intentionally uploaded by administrators.
The environment is affected if ArslanSoft Education Portal version is below 1.1 AND the file upload feature is accessible AND uploaded files can be executed from the web root.
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 data1.1
Upgrade to Education Portal v1.1 or later. If patching is not immediately possible, disable file upload functionality or implement strict file type validation, store uploads outside the web root, and disable script execution in upload directories.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-5636 — 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-2023-5636 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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