CVE-2020-15639
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 · uneditedThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Marvell QConvergeConsole 5.5.0.64. Authentication is not required to exploit this vulnerability. The specific flaw exists within the decryptFile method of the FlashValidatorServiceImpl class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-10496.
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 confidencePath traversal vulnerability in the decryptFile method of FlashValidatorServiceImpl class in Marvell QConvergeConsole 5.5.0.64 allows unauthenticated remote attackers to execute arbitrary code as SYSTEM due to lack of validation on user-supplied file paths.
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< 5.5.00.73CVSS 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.
-
Verify QConvergeConsole installationCheck for QConvergeConsole installation directory or running service - look for process named 'QConvergeConsole' or service listening on default ports (8443, 443, 8080)Affected if QConvergeConsole is installed and running
-
Determine installed versionLocate the version file or check the application GUI login page footer for version number, or query the service endpoint for version informationAffected if Installed version is 5.5.0.64 or any version prior to 5.5.00.73
-
Identify exposed management interfaceCheck network listening ports (common: 8443, 8444) and confirm the FlashValidatorServiceImpl endpoint is accessible via web interfaceAffected if QConvergeConsole management interface is exposed on network-accessible IP
-
Confirm vulnerability contextThe decryptFile method in FlashValidatorServiceImpl class processes user-supplied file paths without validation - check if unauthenticated requests can reach this endpointAffected if Unauthenticated access to the file decryption endpoint is possible without authentication
You are affected if QConvergeConsole is running with a version lower than 5.5.00.73 and the management interface is network-accessible, allowing unauthenticated path traversal in the decryptFile method.
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.
dbcve · scoped5.5.00.73
Apply vendor patch immediately; if unavailable, restrict network access to the QConvergeConsole management interface and implement strict input validation on file path parameters.
QConvergeConsole 5.5.00.73 or later
- 1. Obtain QConvergeConsole version 5.5.00.73 or later from the official Marvell website (www.marvell.com)
- 2. Create a complete backup of the current QConvergeConsole installation and its configuration files
- 3. Stop the QConvergeConsole service before applying the update
- 4. Install or upgrade to QConvergeConsole version 5.5.00.73 or later using Marvell's standard upgrade procedure
- 5. Restart the QConvergeConsole service after the upgrade completes
- 6. Verify that the FlashValidatorServiceImpl component has been updated and the service is running normally
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-15639 — 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-2020-15639 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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
- No spam, self-promotion, credentials, or personal data