CVE-2021-40841
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 · uneditedA Path Traversal vulnerability for a log file in LiveConfig 2.12.2 allows authenticated attackers to read files on the underlying server.
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 confidenceLiveConfig 2.12.2 contains a path traversal vulnerability in its log file handling functionality that allows authenticated attackers to read arbitrary files on the server file system by manipulating file paths used in log operations.
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<= 2.12.2CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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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Identify LiveConfig installationLocate the LiveConfig installation directory and binary. Common locations include /opt/liveconfig, /usr/local/liveconfig, or check for the 'liveconfig' service via systemctl status liveconfig or ps aux | grep liveconfigAffected if LiveConfig is installed on the system
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Determine installed LiveConfig versionRun 'liveconfig --version' or check the version displayed in the LiveConfig web interface login page, or examine the installed package version via dpkg -l liveconfig or rpm -qi liveconfig depending on Linux distributionAffected if Version is 2.12.2 or lower
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Verify authentication requirementsConfirm whether the LiveConfig web interface is accessible and requires authentication. Path traversal in log handling affects authenticated users, so determine if default credentials remain unchanged or if user accounts existAffected if Authenticated access to LiveConfig is possible (valid credentials exist or default credentials unchanged)
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Check log configuration settingsExamine LiveConfig configuration files (typically liveconfig.xml or liveconfig.conf in /etc or the installation directory) for log file path settings. Look for any configurable log file paths that could accept user-supplied inputAffected if Log file paths are configurable or user-accessible within the application
A system is affected if LiveConfig version 2.12.2 or lower is installed and log file handling functionality is accessible to authenticated users, allowing manipulated file paths to read arbitrary files.
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 dataApply any available vendor patch for LiveConfig. If no patch exists, implement strict input validation and canonicalization on all file path parameters, restricting access to the application directory and below.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-40841 — 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-2021-40841 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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