CVE-2011-0263
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 · uneditedMultiple stack-based buffer overflows in ovas.exe in the OVAS service in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allow remote attackers to execute arbitrary code via a long (1) Source Node or (2) Destination Node variable.
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 confidenceStack-based buffer overflow vulnerability in ovas.exe (OVAS service) in HP OpenView Network Node Manager versions 7.51 and 7.53 allows remote attackers to execute arbitrary code by sending specially crafted packets with overly long Source Node or Destination Node variables.
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 if HP OpenView Network Node Manager is installedSearch for NNM installation directories (commonly under C:\HP\OpenView or /opt/OV) and look for the ovas.exe binary in the bin or service directoryAffected if HP OpenView Network Node Manager software is present on the system
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Determine installed NNM versionCheck the NNM version through the application itself (typically via 'ovw -version' command line, or check version info in registry or version.txt file in the installation directory)Affected if The installed version matches exactly 7.51 or 7.53
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Verify OVAS service is runningCheck for the ovas.exe process running as a Windows service or check if the OVAS service is started (look in Windows Services console or use 'sc query ovas' command)Affected if The OVAS service is enabled and running on the affected NNM version
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Assess network exposure of OVAS serviceCheck which network interfaces and ports the OVAS service is listening on (use 'netstat -an' or check firewall rules for port 2699/tcp typically used by OVAS)Affected if The OVAS service is exposed to untrusted network traffic
The system is affected if HP OpenView Network Node Manager versions 7.51 or 7.53 are installed with the OVAS service running and accessible to the network.
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 HP security patches for this vulnerability or upgrade to a supported version of NNM. Until patched, restrict network access to the OVAS service and monitor for exploitation attempts.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2011-0263 — 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-2011-0263 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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