CVE-2012-0511
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 · uneditedUnspecified vulnerability in the OCI component in Oracle Database Server 10.2.0.3, 10.2.0.4, and 11.1.0.7 allows remote attackers to affect confidentiality and integrity via unknown 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 confidenceUnspecified vulnerability in the Oracle Call Interface (OCI) component of Oracle Database Server versions 10.2.0.3, 10.2.0.4, and 11.1.0.7 allows remote attackers to affect confidentiality and integrity via unknown vectors. The OCI is the low-level API used by applications to interact with the Oracle database.
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= 10.2.0.4= 11.1.0.7CVSS 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
- None
AV:N/AC:L/Au:N/C:P/I:P/A:N
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 Oracle Database server versionQuery the database by connecting with SQL*Plus or another client and running: SELECT VERSION FROM V$INSTANCE; or check the Oracle inventory files on the server (typically in $ORACLE_HOME/inventory/ContentsXML/oraclehomeproperties.xml)Affected if The version returned is 10.2.0.3, 10.2.0.4, or 11.1.0.7 exactly
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Confirm Oracle Call Interface (OCI) is in useCheck if any applications on or accessing the database server are using OCI for connections. Review application configuration for JDBC Thin vs OCI/Thick connections, or check for presence of OCI libraries (like libclntsh.so) in use by processesAffected if OCI/Thick client connections are being used rather than JDBC Thin driver only
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Determine if the Oracle listener is network-accessibleCheck the Oracle listener configuration (listener.ora) and verify whether the listener port (default 1521) is bound to external interfaces or only to localhost/127.0.0.1. Use 'lsnrctl status' to check current listener statusAffected if The listener is bound to 0.0.0.0 or a public IP address and is reachable from untrusted networks
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Check for unauthenticated network exposureScan or review firewall rules to determine if the Oracle listener port is accessible from outside the trusted network segment or from systems that should not have database accessAffected if The Oracle listener port is open to unrestricted or untrusted network access
You are affected if your Oracle Database Server is exactly version 10.2.0.3, 10.2.0.4, or 11.1.0.7 AND OCI/Thick client connections are in use AND the database listener is network-accessible to untrusted parties.
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 the Oracle Critical Patch Update (CPU) that addresses CVE-2012-0511, or upgrade to a patched version of Oracle Database. If immediate patching is not feasible, restrict network access to the Oracle listener ports and implement defense-in-depth controls around database servers.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-0511 — 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-2012-0511 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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