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Weblogic ServerApplication · Oracle

CVE-2018-3191

CRITICAL · 9.8 CVSS v3.0 Published 2018-10-17
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
High EPSS Remotely reachable No privileges Zero-click Patch available

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 · unedited
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS Core Components). Supported versions that are affected are 10.3.6.0, 12.1.3.0 and 12.2.1.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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

A detailed technical summary for this CVE is being prepared.

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
Weblogic ServerApplication
Affected:= 10.3.6.0.0= 12.1.3.0.0= 12.2.1.3.0

CVSS 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

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 · scoped
Patch available Apply the vendor patch
Vendor patch www.oracle.com →
Recommended fix High confidence

Oracle WebLogic Server 12.2.1.4 or later includes the fix for CVE-2018-3191; alternatively apply October 2018 CPU patch (CPUOCT2018)

  1. Review the Oracle Critical Patch Update advisory for October 2018 at http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
  2. Identify the specific patch ID for your WebLogic Server version (10.3.6.0, 12.1.3.0, or 12.2.1.3.0) from the advisory
  3. Download the patch from Oracle's support website (support.oracle.com) using your Oracle Support credentials
  4. Stop the WebLogic Server domain and all managed servers
  5. Apply the patch using Oracle's OPatch utility: opatch apply
  6. Verify the patch was applied successfully: opatch lsinventory
  7. Restart the WebLogic Server domain
  8. If immediate patching is not possible, restrict network access to the T3/IIOP ports at the network level or disable the T3 protocol until the patch can be applied
Caveat Patches may require downtime for application and testing; always test in non-production environment first

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2018-3191 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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