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AbcdApplication · Abcd Community

CVE-2024-8409

HIGH · 7.5 CVSS v3.1 Published 2024-09-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
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
A vulnerability classified as problematic has been found in ABCD ABCD2 up to 2.2.0-beta-1. This affects an unknown part of the file /common/show_image.php. The manipulation of the argument image leads to path traversal: '../filedir'. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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

A path traversal vulnerability in ABCD ABCD2 (up to 2.2.0-beta-1) allows remote attackers to access arbitrary files on the server by manipulating the 'image' parameter in /common/show_image.php with '../' sequences to traverse directories outside the intended image directory.

MitigationImplement strict input validation on the image parameter using basename() and whitelist filtering to only allow known-safe image filenames, preventing directory traversal sequences.

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
AbcdApplication
Affected:= 2.2.0

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
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 checks

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

  1. Locate ABCD application directory
    Find the ABCD web application installation on the server. Common paths include /var/www/html/, /www/, /htdocs/, or C:\inetpub\wwwroot\. Look for directories named 'abcd' or 'abcd2' containing PHP files.
    Affected if ABCD web application directory is present on the server
  2. Identify ABCD version
    Open the main index.php or version.php file in the ABCD root directory. Look for a version string or number displayed in the code, comments, or footer. Compare this against the affected version 2.2.0 (including 2.2.0-beta-1).
    Affected if Installed version is 2.2.0 or any version up to and including 2.2.0-beta-1
  3. Verify vulnerable file exists
    Check for the existence of /common/show_image.php within the ABCD installation directory. This is the file containing the path traversal vulnerability.
    Affected if File /common/show_image.php exists in the ABCD installation
  4. Confirm parameter accessibility
    Examine the show_image.php file to verify it accepts an 'image' parameter via GET or POST request without requiring authentication. Also confirm the web server serves this file to remote users.
    Affected if The 'image' parameter is processed without authentication and the endpoint is network-accessible

The environment is affected if ABCD version 2.2.0 or earlier is installed, the file /common/show_image.php exists, and the 'image' parameter endpoint is accessible to remote users without authentication.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement strict input validation on the image parameter using basename() and whitelist filtering to only allow known-safe image filenames, preventing directory traversal sequences.

Recommended fix Moderate confidence

Latest stable release of ABCD2 after version 2.2.0-beta-1 (check GitHub repository for current stable version)

  1. 1. Identify the current installed version of ABCD2 by checking the application or configuration files
  2. 2. Backup the current installation and database before making any changes
  3. 3. Download the latest stable release of ABCD2 from the official repository (github.com)
  4. 4. Replace the existing installation files with the new version, preserving configuration and data files
  5. 5. Verify that the /common/show_image.php file has been updated or patched in the new version
  6. 6. Test the application functionality, particularly image display features
  7. 7. Verify the path traversal vulnerability is resolved by attempting to access files outside the intended directory using the image parameter
Caveat Minor: Review release notes for any configuration changes or deprecated features between 2.2.0-beta-1 and the target stable version

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Abcd Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
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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-2024-8409 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data