dbcve.org
Outside In TechnologyApplication · Oracle

CVE-2021-2066

HIGH · 8.6 CVSS v3.1 Published 2021-01-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 Outside In Technology product of Oracle Fusion Middleware (component: Outside In Filters). Supported versions that are affected are 8.5.4 and 8.5.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Outside In Technology accessible data as well as unauthorized read access to a subset of Oracle Outside In Technology accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Outside In Technology. Note: Outside In Technology is a suite of software development kits (SDKs). The protocol and CVSS score depend on the software that uses the Outside In Technology code. The CVSS score assumes that the software passes data received over a network directly to Outside In Technology code, but if data is not received over a network the CVSS score may be lower. CVSS 3.1 Base Score 8.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L).

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 confidence

Vulnerability in Oracle Outside In Technology's Filters component (versions 8.5.4/8.5.5) allows unauthenticated remote attackers via HTTP to create, delete, or modify critical data, read a subset of accessible data, and cause partial denial of service. The flaw exists in how the filters process incoming data streams.

MitigationApply Oracle Critical Patch Updates for Outside In Technology 8.5.4 and 8.5.5. Additionally, restrict network access to systems using Outside In SDKs and implement input validation before passing data to filter components.

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
Outside In TechnologyApplication
Affected:= 8.5.4= 8.5.5

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
Low
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Oracle Outside In Technology installation
    Locate the Oracle Outside In SDK or related filter components on the system. Check for directories or packages containing 'Outside In' or 'filters' in the product name.
    Affected if Oracle Outside In Technology is present on the system
  2. Determine the installed version
    Use the product's version reporting mechanism or check the product's About/Version information. Common locations include installation directories, bundled version files, or product documentation.
    Affected if The installed version is exactly 8.5.4 or exactly 8.5.5
  3. Verify the Filters component is in use
    Check if the Filters component of Outside In Technology is actively processing data streams. This may be visible in running services, active filter processes, or configuration where data streams are being parsed.
    Affected if The Filters component is enabled and processing incoming data streams
  4. Assess network exposure
    Determine if the system or application using Outside In Filters is accessible via HTTP/HTTPS network connections. Check network listeners, web service configurations, or API endpoints that utilize the filter functionality.
    Affected if The system is network-accessible via HTTP and the filter component is exposed

The environment is affected if Oracle Outside In Technology Filters version 8.5.4 or 8.5.5 is installed, the Filters component is actively processing data, and the system is accessible via HTTP network connections.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply Oracle Critical Patch Updates for Outside In Technology 8.5.4 and 8.5.5. Additionally, restrict network access to systems using Outside In SDKs and implement input validation before passing data to filter components.

Fix this in Outside In Technology Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA4.0 h
40.0 hours of engineering $7,000
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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-2021-2066 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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