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CVE-2020-2931

9.8 CRITICAL
Remote Code Execution

📋 TL;DR

This critical vulnerability in Oracle Knowledge allows unauthenticated attackers with network access via HTTP to completely compromise affected systems. It affects Oracle Knowledge versions 8.6.0 through 8.6.3, potentially leading to full system takeover.

💻 Affected Systems

Products:
  • Oracle Knowledge
Versions: 8.6.0 through 8.6.3
Operating Systems: Not specified - likely multiple as Oracle Knowledge runs on various platforms
Default Config Vulnerable: ⚠️ Yes
Notes: Affects the Web Applications - InfoCenter component specifically. All installations within affected version range are vulnerable.

📦 What is this software?

Knowledge by Oracle

View all CVEs affecting Knowledge →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of Oracle Knowledge system leading to data theft, system destruction, and use as pivot point for further network attacks.

🟠

Likely Case

Remote code execution leading to data exfiltration, system manipulation, and potential ransomware deployment.

🟢

If Mitigated

Limited impact if system is isolated behind strict network controls and authentication requirements.

🌐 Internet-Facing: HIGH - CVSS 9.8 indicates critical risk for internet-facing systems due to unauthenticated remote exploitation.
🏢 Internal Only: HIGH - Even internal systems are at high risk due to unauthenticated nature and network accessibility.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

CVSS indicates 'easily exploitable' with low attack complexity. No public exploit code is known from available references.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 8.6.4 or later (patched in April 2020 Critical Patch Update)

Vendor Advisory: https://www.oracle.com/security-alerts/cpuapr2020.html

Restart Required: Yes

Instructions:

1. Download April 2020 Critical Patch Update from Oracle Support. 2. Apply patch to Oracle Knowledge installation. 3. Restart Oracle Knowledge services. 4. Verify successful patch application.

🔧 Temporary Workarounds

Network Segmentation

all

Restrict network access to Oracle Knowledge systems to only trusted sources

Use firewall rules to limit HTTP/HTTPS access to specific IP ranges

Authentication Enforcement

all

Implement authentication proxy in front of Oracle Knowledge

Configure reverse proxy with authentication (e.g., Apache mod_auth, nginx auth modules)

🧯 If You Can't Patch

  • Isolate Oracle Knowledge systems in separate network segment with strict access controls
  • Implement web application firewall (WAF) with specific rules for Oracle Knowledge traffic

🔍 How to Verify

Check if Vulnerable:

Check Oracle Knowledge version via admin console or configuration files. If version is between 8.6.0 and 8.6.3, system is vulnerable.

Check Version:

Check Oracle Knowledge version via admin interface or consult installation documentation for version verification method.

Verify Fix Applied:

Verify Oracle Knowledge version is 8.6.4 or later after applying April 2020 CPU patch.

📡 Detection & Monitoring

Log Indicators:

  • Unusual HTTP requests to InfoCenter endpoints
  • Unauthenticated access attempts to administrative functions
  • Unexpected process execution or file modifications

Network Indicators:

  • Unusual outbound connections from Oracle Knowledge server
  • HTTP requests with suspicious payloads to vulnerable endpoints

SIEM Query:

source="oracle_knowledge" AND (http_status=200 AND http_method=POST AND uri CONTAINS "/infocenter/") | stats count by src_ip

📊 Metadata

CVE ID: CVE-2020-2931
CVSS v3 Score: 9.8 (CRITICAL)
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: April 15, 2020
Last Updated: November 21, 2024

🔗 References

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