CVE-2018-12548
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 · uneditedIn OpenJDK + Eclipse OpenJ9 version 0.11.0 builds, the public jdk.crypto.jniprovider.NativeCrypto class contains public static natives which accept pointer values that are dereferenced in the native code.
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 jdk.crypto.jniprovider.NativeCrypto class in Eclipse OpenJ9 0.11.0 contains public static native methods that accept pointer values which are directly dereferenced in native code without proper validation. This allows attackers to manipulate pointer values to read/write to arbitrary memory addresses, potentially achieving remote code execution.
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= 0.11.0CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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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Confirm Eclipse OpenJ9 installation and versionRun 'java -version' to display the JVM implementation details. Look for 'Eclipse OpenJ9' in the output and note the version string.Affected if The version shown is exactly 0.11.0
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Locate the NativeCrypto classSearch for the jdk.crypto.jniprovider.NativeCrypto class in the JDK installation directory. On typical setups, this is found under <JAVA_HOME>/lib/modules or within the jdk.crypto.jniprovider module.Affected if The NativeCrypto class exists and contains public static native methods accepting pointer parameters
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Verify the jdk.crypto.jniprovider module is loadedRun 'java -XshowSettings:properties -version' and look for 'jdk.crypto.jniprovider' in the module list, or use 'java --list-modules' to enumerate loaded modules.Affected if The jdk.crypto.jniprovider module is present and active in the runtime
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Check for cryptographic operations using native codeReview any application code or libraries that utilize java.security or javax.crypto APIs, as these internally invoke the NativeCrypto native methods for cryptographic operations.Affected if The application uses cryptographic functions that route through the vulnerable NativeCrypto class
You are affected only if Eclipse OpenJ9 version 0.11.0 is running with the jdk.crypto.jniprovider module loaded and cryptographic operations are performed that invoke the vulnerable NativeCrypto native methods.
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 Eclipse OpenJ9 to version 0.12.0 or later which contains the patched NativeCrypto class with proper pointer validation in the native methods.
- Consultation2.0 h
- Implementation1.0 h
- Testing4.0 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 $2,464.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-12548 — 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-2018-12548 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
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