Overview
On April 15, 2020, Beijing time, Oracle released Critical Patch Update (CPU) for April 2020 that fixes 397 vulnerabilities of different risk levels.
These vulnerabilities include three critical ones (CVE-2020-2801, CVE-2020-2883, and CVE-2020-2884) that target Oracle WebLogic Server with a CVSS score of 9.8.
These vulnerabilities allow unauthenticated attackers with network access via T3 to compromise vulnerable Oracle WebLogic Server. Successful exploitation could result in takeover of Oracle WebLogic Server, hence remote code execution.
Reference link:
https://www.oracle.com/security-alerts/cpuapr2020.html#AppendixFMW
Affected Versions
- Oracle WebLogic Server 10.3.6.0.0
- Oracle WebLogic Server 12.1.3.0.0
- Oracle WebLogic Server 12.2.1.3.0
- Oracle WebLogic Server 12.2.1.4.0
Solution
Oracle has released patches to fix these vulnerabilities. Affected users should visit the official security bulletin link to download related patches as soon as possible and apply them as indicated in the readme file to ensure long-term effective protection.
Note: Official patches of Oracle can be downloaded only by those with a licensed account of the software. Such users can use that account to log in to https://support.oracle.com to obtain the latest patch.
Mitigation:
If you cannot install patches for the time being, disable the T3 protocol to protect against this vulnerability.
For more information, see Oracle’s official security advisory at the following link:
https://www.oracle.com/security-alerts/cpuapr2020.html
Statement
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