CVE-2005-3823
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 · uneditedThe Users module in vTiger CRM 4.2 and earlier allows remote attackers to execute arbitrary PHP code via an arbitrary file in the templatename parameter, which is passed to the eval function.
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 confidenceThe Users module in vTiger CRM 4.2 and earlier contains a remote code execution vulnerability where the templatename parameter is passed directly to PHP's eval() function without sanitization. An unauthenticated remote attacker can inject arbitrary PHP code through this parameter to execute commands on the server.
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<= 4.2CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 vTiger CRM installation and versionSearch for version.php, About (or similar version disclosure files) in the web root, or check the HTTP response headers/banners. Compare the installed version to the affected range (<= 4.2).Affected if The installed version is 4.2 or earlier.
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Locate the Users moduleSearch the web root for the Users module files (commonly in /modules/Users/). Verify the module directory exists and is accessible via the web server.Affected if The Users module directory exists and is web-accessible.
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Inspect code for vulnerable eval() usageGrep or search within the Users module for 'eval(' or 'templatename' to locate the code that processes the templatename parameter. Examine whether user input flows directly into an eval() call without sanitization.Affected if The templatename parameter is passed directly to eval() without input validation.
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Confirm network accessibility of vulnerable endpointDetermine if the affected script can be reached without authentication. Test accessing the Users module URL with a crafted templatename parameter from an external network perspective.Affected if The vulnerable endpoint is reachable without authentication from the network.
A system is affected if it runs vTiger CRM version 4.2 or earlier with the Users module accessible over the network and the templatename parameter flowing unsanitized into an eval() call.
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 dataUpgrade vTiger CRM to a patched version (4.2.1 or later), or implement strict input validation on the templatename parameter to disallow any code injection attempts and remove or refactor the eval() usage.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2005-3823 — 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-2005-3823 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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