References https://nvd.nist.gov/vuln/detail/CVE-2021-2173 https://www.oracle.com/security-alerts/cpuapr2021.html https://cve.imfht.com/detail/CVE-2021-2173 https://databasesecurityninja.wordpress.com/2021/06/04/cve-2021-2173-pdb-isolation-is-broken-through-metadata-exposure/ https://github.com/emad-almousa/CVE-2021-2173 https://www.tenable.com/plugins/nessus/148894 https://www.oracle.com/security-alerts/cpuapr2021verbose.html https://cve.imfht.com/poc_detail/49394b40df902d6e97671640af2f1ef1f6aada27
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