CVE-2024-34523
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 · uneditedAChecker 1.5 allows remote attackers to read the contents of arbitrary files via the download.php path parameter by using Unauthenticated Path Traversal. This occurs through readfile in PHP. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
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 confidenceAChecker 1.5 contains an unauthenticated path traversal vulnerability in download.php where the path parameter is not properly sanitized, allowing remote attackers to use '../' sequences to traverse directories and read arbitrary files on the server through PHP's readfile function.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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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Confirm AChecker is installedLocate the AChecker application directory in the web root (commonly /achecker, /AChecker, or similar). Look for the main index.php or documentation files that identify the application.Affected if AChecker directory exists on the web server
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Identify AChecker versionCheck the version of AChecker by reviewing version.php, README files, or any version-related file within the AChecker installation directory. Compare the version to 1.5.Affected if Version is 1.5 or the version cannot be determined (assumed vulnerable)
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Verify download.php existsCheck for the presence of download.php file in the AChecker web directory (typically in the root or a scripts subdirectory).Affected if download.php file is present in the AChecker installation
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Confirm web accessibilityDetermine if the AChecker application is accessible over HTTP/HTTPS. Attempt to access the download.php endpoint directly via the web server.Affected if download.php is accessible via web requests (no authentication required for the vulnerability)
A system is affected if AChecker version 1.5 is installed and the download.php file is accessible on the web server, allowing unauthenticated path traversal via the path parameter.
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 dataSince AChecker is no longer supported, remove the application if unused; otherwise implement web application firewall rules or input validation to block path traversal patterns (../) in request parameters, or migrate to a supported alternative.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
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Free · runs locallyCheck whether your project pulls in CVE-2024-34523 — 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-2024-34523 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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