CVE-2018-0545
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 · uneditedLXR version 1.0.0 to 2.3.0 allows remote attackers to execute arbitrary OS commands via unspecified vectors.
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 confidenceLXR (Linux Cross Reference) versions 1.0.0 through 2.3.0 contain a critical command injection vulnerability allowing remote attackers to execute arbitrary operating system commands. The specific attack vector is not detailed in available documentation, but the vulnerability is exploitable without authentication.
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>= 1.0.0, <= 2.3.0CVSS 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:3.0/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.
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Identify LXR versionCheck the version file, about page, or run 'lxr --version' or look for version information in the LXR installation directory (commonly /usr/lib/lxr, /var/www/html/lxr, or similar). Compare the installed version to the affected range 1.0.0 through 2.3.0.Affected if The installed version is 1.0.0, 1.x.x, 2.0.x, 2.1.x, 2.2.x, or 2.3.0
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Confirm LXR is running and accessibleVerify the LXR web application is running and reachable over HTTP/HTTPS. Check if the service is active using 'systemctl status lxr' or 'ps aux | grep lxr'. Determine if the web interface responds to requests.Affected if LXR is actively running and accessible over the network (especially if exposed to the internet or untrusted networks)
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Check for unauthorized shell access or suspicious processesReview web server logs (access.log, error.log) and system logs for unusual command patterns, unexpected shell invocations, or signs of command injection attempts. Look for process anomalies using 'ps aux' or 'top'.Affected if Unexpected commands, shell executions, or processes that correspond to system compromise are found in logs or running processes
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Inspect LXR configuration filesExamine LXR configuration files (typically lxr.conf, lxr.config, or similar in the installation directory) for any modifications, unexpected entries, or malicious parameter values that may indicate exploitation.Affected if Configuration files contain suspicious values, unexpected commands, or have been modified without documented change approval
A user is affected if their installed LXR version falls within 1.0.0 through 2.3.0 and the application is accessible over the network, particularly without authentication or additional access controls.
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 · scopedUpgrade LXR to version 2.3.1 or later where the vulnerability is patched. If patching is not immediately possible, restrict network access to LXR instances and implement web application firewall rules as a temporary measure.
LXR 2.3.1 or later (preferably latest 3.x release)
- 1. Identify the current LXR installation version by checking the version file or running 'lxr --version'
- 2. Download the latest stable LXR release from the official source (lxr.sourceforge.net)
- 3. Backup the existing LXR configuration files and database before upgrading
- 4. Extract the new version and run the installation/update procedure as documented in the LXR admin manual
- 5. Restore or update your custom configuration to match the new version's requirements
- 6. Verify the installation by checking that LXR functions correctly and the version number reflects the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-0545 — 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-2018-0545 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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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