dbcve.org
AvideoApplication · Wwbn

CVE-2022-30534

HIGH · 8.8 CVSS v3.1 Published 2022-08-22
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
High EPSS Remotely reachable 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
An OS command injection vulnerability exists in the aVideoEncoder chunkfile functionality of WWBN AVideo 11.6 and dev master commit 3f7c0364. A specially-crafted HTTP request can lead to arbitrary command execution. An attacker can send an HTTP request to trigger this vulnerability.

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 confidence

OS command injection vulnerability in the aVideoEncoder chunkfile functionality of WWBN AVideo 11.6 and dev master commit 3f7c0364 allows attackers to execute arbitrary commands via specially-crafted HTTP requests by injecting malicious commands into the chunkfile processing logic.

MitigationImplement strict input validation and sanitization on all user-supplied parameters in the chunkfile functionality, preferably using allowlists and avoiding shell execution; replace system command calls with safe APIs or parameterized functions.

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
AvideoApplication
Affected:= 11.6

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/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. Identify the installed AVideo version
    Locate the version file or admin panel that displays the AVideo software version. This is typically found in the platform's about page, version info file, or admin dashboard.
    Affected if The installed version is 11.6 or the specific commit 3f7c0364.
  2. Confirm aVideoEncoder is installed and active
    Check if the aVideoEncoder component is present in the AVideo installation. This is usually a separate encoder service or module integrated with the main platform.
    Affected if aVideoEncoder is installed and processing media files.
  3. Determine if chunkfile functionality is accessible
    Identify whether the chunkfile upload/processing endpoint is exposed. This feature handles chunked file uploads for video encoding.
    Affected if The chunkfile upload endpoint is reachable via HTTP without additional authentication beyond standard AVideo access controls.
  4. Review web server and application logs for suspicious chunkfile requests
    Search access logs for requests to chunkfile-related endpoints. Look for unusual characters, pipes, semicolons, or command separators in filename or parameter values.
    Affected if Logs show chunkfile requests containing shell metacharacters (such as ; | & $ ` or command substitution patterns) that could indicate exploitation attempts.
  5. Check for unexpected system commands or processes
    Review any available process logs or command audit logs on the web server for unfamiliar commands executed by the web server user.
    Affected if Commands were executed by the web server process that were not part of legitimate video encoding operations.

You are affected if running AVideo version 11.6 with aVideoEncoder and chunkfile functionality enabled, and especially if logs show suspicious command injection patterns in chunkfile requests.

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 and sanitization on all user-supplied parameters in the chunkfile functionality, preferably using allowlists and avoiding shell execution; replace system command calls with safe APIs or parameterized functions.

Recommended fix Moderate confidence

AVideo 12.0 or later stable release (contains fix for commit after 3f7c0364)

  1. 1. Backup your current AVideo installation and database before making any changes.
  2. 2. Navigate to your AVideo installation directory.
  3. 3. Update to the latest stable release of AVideo (version 12.0 or later) using your preferred method (git pull, download from official source, or your system's package manager).
  4. 4. Verify the aVideoEncoder.php file has been updated to include proper input sanitization for the chunkfile parameter.
  5. 5. Test that the aVideoEncoder functionality works correctly with the update.
  6. 6. Monitor for any unusual activity or errors in your web server logs.
Caveat Standard upgrade precautions apply - backup before upgrading; ensure PHP and MySQL/MariaDB versions meet the new release requirements

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

Fix this in Avideo Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2022-30534 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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