vulnerability note 9414 Oracle Database: privilege elevation via DBMS_JVM/DBMS_JAVA
Synthesis of the vulnerability

An attacker, authenticated on an Oracle database, can call procedures of DBMS_JVM_EXP_PERMS and DBMS_JAVA, in order to execute commands with system privileges.

Severity: 2/4. Consequences: administrator access/rights, privileged access/rights. Provenance: user account. Means of attack: no proof of concept, no attack. Ability of attacker: expert (4/4). Confidence: confirmed by the editor (5/5). Diffusion of the vulnerable configuration: high (3/3). Creation date: 08/02/2010.

Impacted products

• Oracle Database versions

Description of the vulnerability

The DBMS_JVM_EXP_PERMS package is used during Oracle updates. The DBMS_JVM_EXP_PERMS.IMPORT_JVM_PERMS procedure changes Java privileges of the user. The DBMS_JAVA package creates and manipulates Java applications from SQL. The DBMS_JAVA.SET_OUTPUT_TO_JAVA procedure defines a method to call when a Java application writes on System.out/err. By combining DBMS_JVM_EXP_PERMS.IMPORT_JVM_PERMS and DBMS_JAVA.SET_OUTPUT_TO_JAVA, an attacker can elevate his privileges and execute a shell command. An attacker, authenticated on an Oracle database, can thus execute commands with system privileges.

Characteristics

Title: Oracle Database: privilege elevation via DBMS_JVM/DBMS_JAVA Identifiers: BID-38115, VIGILANCE-VUL-9414. Url: https://vigilance.fr/tree/1/9414

Information sources

Publications and announces Source example: Vulnerability in Oracle 11gR2 allows system privileges for all

Solutions for this vulnerability

Patch or workaround