CVE-2011-0271
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 CGI scripts in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 do not properly validate an unspecified parameter, which allows remote attackers to execute arbitrary commands by using a command string for this parameter's value, 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 confidenceThe CGI scripts in HP OpenView Network Node Manager versions 7.51 and 7.53 contain a command injection vulnerability due to improper validation of an unspecified parameter, allowing remote attackers to execute arbitrary operating system commands via the affected CGI interface.
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= 7.51= 7.53CVSS 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
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 installed NNM versionRun the NNM version check command (ovoo -version, ovtopmd -version, or check HP Software/patch inventory) to determine the exact installed version of HP OpenView Network Node ManagerAffected if The installed version is exactly 7.51 or 7.53
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Confirm CGI interface is accessibleAttempt to access the NNM CGI endpoints (such as /OvCgi/nnmCgi.exe or /cgi-bin/nnmCgi) via HTTP/HTTPS request to verify the CGI interface is exposed and respondingAffected if The CGI interface is accessible over the network
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Check web server CGI configurationReview the web server configuration (Apache httpd.conf, IIS, or embedded web server) to verify that CGI script execution is enabled for the NNM installation pathsAffected if CGI script execution is enabled for NNM paths
The environment is affected if HP OpenView Network Node Manager version 7.51 or 7.53 is installed AND the CGI interface is exposed and enabled
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 · scopedApply HP security patches for CVE-2011-0271 or upgrade to a patched version; implement network segmentation to restrict access to NNM CGI interfaces until patches can be applied.
Apply HP-supplied patch for NNM 7.51/7.53; if no patch available, consider migrating to a supported HP or third-party network management solution
- Check HP Support for the official security bulletin related to CVE-2011-0271
- Obtain the HP patch or update from HP's official support channels for OpenView Network Node Manager 7.51 or 7.53
- Apply the patch following HP's documented installation procedures
- Verify the patch was applied successfully
- Restart affected services if required by the patch documentation
- Validate that the CGI scripts are no longer vulnerable to command injection
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-0271 — 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-2011-0271 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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