Oracle Database Server contains a vulnerability that could allow an authenticated, remote attacker to execute arbitrary code as the OSDBA user. Updates are not available.
Oracle Database Server contains a vulnerability that could allow an authenticated, remote attacker to execute arbitrary code as the OSDBA user.
The vulnerability is due to a design error in the database. An attacker with EXECUTE permissions on a directory and CREATE TABLE privileges could exploit this vulnerability to execute arbitrary code with OSDBA privileges. The attacker could also run commands on the underlying operating system with the privileges of the Database Server process. Exploitation could lead to a full compromise of the affected database.
Functional exploit code is publicly available.
Oracle has not confirmed this vulnerability and updated software is not available.
Oracle Database Server version 18.104.22.168.0 is vulnerable
The vulnerability can be exploited only by an authenticated attacker with the CREATE TABLE privilege. The attacker must have access to a directory that has EXECUTE privileges on it and privileges to use UTL_FILE, which is assigned to PUBLIC by default.
Vendor announcements are not available.
An authenticated, remote attacker could exploit this vulnerability to execute commands on the underlying operating system with the privileges of the database user. The attacker could also execute arbitrary code on the database with OSDBA privileges.
The vulnerability is due to a weakness in the implementation of the UTL_FILE object. An attacker with access to a directory with EXECUTE privileges could use UTL_FILE to create a script file on the operating system in that directory. Th attacker could execute the script by the use of the CREATE TABLE privilege. In this way, the attacker can execute operating system commands with the privileges of the database user. The attacker could use such a script to obtain OSDBA privileges, resulting in privilege escalation.
Administrators are advised to contact the vendor regarding future updates and releases.
Administrators may consider revoking the PUBLIC privileges on UTL_FILE.
Administrators are advised to monitor affected systems for signs of suspicious activities.
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