On April 14, local time, Oracle released the April Critical Patch Update (CPU) which fixes vulnerabilities that include a critical one (CVE-2020-2915) in Oracle Coherence CPU, with a CVSS score of 9.8.
This vulnerability allows unauthenticated attackers with network access via T3 to compromise vulnerable Oracle Coherence. Successful exploitation of it could result in takeover of Oracle Coherence, hence remote code execution.
Products that use Oracle Coherence are affected by this vulnerability. The installation package of WebLogic Server 11g Release (10.3.4) and later has the Oracle Coherence library integrated by default.
- Oracle Coherence 18.104.22.168
- Oracle Coherence 22.214.171.124.0
- Oracle Coherence 126.96.36.199.0
- Oracle Coherence 188.8.131.52.0
Oracle has released patches to fix the vulnerability in question. 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.
If users cannot install patches for the time being, they can disable the T3 protocol to protect against this vulnerability:
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