CVE-2011-0456
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 · uneditedwebscript.pl in Open Ticket Request System (OTRS) 2.3.4 and earlier allows remote attackers to execute arbitrary commands via unspecified vectors, related to a "command injection vulnerability."
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 confidenceA command injection vulnerability in webscript.pl in OTRS (Open Ticket Request System) versions 2.3.4 and earlier allows remote attackers to execute arbitrary operating system commands. The vulnerability stems from insufficient input validation in the webscript.pl component, which processes user-supplied data without proper sanitization.
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<= 2.3.4= 1.3.2= 1.3.3= 2.0.1= 2.0.2= 2.0.3= 2.0.4= 2.0.5= 2.1.1= 2.1.2= 2.1.3= 2.1.4CVSS 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 OTRS installation versionCheck the version file or login to the OTRS admin interface to determine the installed OTRS version. Common locations include the README file in the OTRS root directory or the Admin panel version information.Affected if The installed version is 1.3.2, 1.3.3, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.1.1, 2.1.2, 2.1.3, 2.1.4, or any version 2.3.4 or earlier.
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Locate webscript.pl componentSearch for the webscript.pl file within the OTRS installation directory. It is typically found in the cgi-bin folder of the OTRS web directory.Affected if The webscript.pl file exists in the OTRS cgi-bin directory.
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Verify webscript.pl is accessible via webAttempt to access the webscript.pl file through the OTRS web URL (e.g., http://your-otrs-host/otrs/webscript.pl). Check if the web server serves the script.Affected if The webscript.pl script responds to HTTP requests and is reachable over the network.
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Confirm webscript.pl is enabledVerify that the webscript.pl script is not disabled in the web server configuration or OTRS system configuration. Check for any RewriteRule or Alias directives that would disable access.Affected if The script is enabled and executable through the web server without any access restrictions.
If your OTRS version is 2.3.4 or earlier (including the specific 1.3.x and 2.0.x versions listed) AND the webscript.pl component exists and is accessible via the web, your environment is affected by this CVE.
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 OTRS to version 2.3.5 or later (or migrate to a supported 3.x/6.x LTS release), or disable the webscript.pl component if not required. Restrict network access to OTRS web interfaces to reduce exposure.
- 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-2011-0456 — 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-2011-0456 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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