Unrestricted File UploadWeakness · CWE-434

CVE-2024-1531

HIGH · 8.2 CVSS v3.1 Published 2024-03-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
88/100
Remediation priority · High
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
A vulnerability exists in the stb-language file handling that affects the RTU500 series product versions listed below. A malicious actor could print random memory content in the RTU500 system log, if an authorized user uploads a specially crafted stb-language file.

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

A vulnerability in stb-language file parsing in RTU500 series products allows an authorized user uploading a specially crafted file to cause random memory contents to be written to the system log, leading to information disclosure.

MitigationRestrict stb-language file upload permissions to essential personnel only, validate and sanitize file content before processing, monitor logs for anomalies, and apply vendor-provided patches when released.

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

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/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. Confirm RTU500 series product
    Identify the device model and firmware version by checking the system information, device dashboard, or running 'show version' or similar command depending on the device interface
    Affected if The device is not an RTU500 series product
  2. Check stb-language file upload capability
    Review user permissions and access controls to determine if the stb-language file upload feature is enabled and accessible to users. Check configuration settings for stb-language or language file upload permissions
    Affected if Users with upload privileges can upload stb-language files to the device
  3. Examine system logs for memory disclosure
    Review system logs (typically found in /var/log/, system event logs, or through the device's log viewer interface) for any entries containing random characters, hex values, memory addresses, or unusual data patterns that do not match expected log formats
    Affected if Logs contain unexpected memory contents, random hex data, or abnormal entries that could indicate exploited memory disclosure
  4. Check for stb-language files on system
    Search the file system for .stb, stb-language, or related language configuration files that may have been uploaded. Use file system search commands or review upload history if available
    Affected if Unexpected stb-language files exist on the system or recent file uploads include stb-language files

The environment is affected if it is an RTU500 series product with stb-language file upload functionality enabled, and unusual memory contents appear in system logs indicating exploited information disclosure.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Restrict stb-language file upload permissions to essential personnel only, validate and sanitize file content before processing, monitor logs for anomalies, and apply vendor-provided patches when released.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-1531 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-1531 in production — separate from our analysis above.

No notes yet

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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
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