[ 2020-01-15 ]

Oracle CPU de Enero 2020 (Critical Patch Update)

El último CPU (Critical Patch Update) liberado el pasado martes 14 de enero, aborda 334 nuevas vulnerabilidades de seguridad en diversas familias de productos Oracle dentro de las que se incluyen: Oracle Database Server, Oracle Communications Applications, Oracle Construction and Engineering, Oracle E-Business Suite, Oracle Enterprise Manager, Oracle Financial Services Applications, Oracle Food and Beverage Aplicaciones, Oracle Fusion Middleware, Oracle GraalVM, Oracle Health Sciences Applications, Oracle Hospitality Applications, Oracle Hyperion, Oracle iLearning, Oracle Java SE, Oracle JD Edwards, Oracle MySQL, Oracle PeopleSoft, Oracle Retail Applications, Oracle Siebel CRM, Oracle Systems, Oracle Supply Chain, Oracle Utilities Applications, Oracle Virtualization.


Este CPU comprende aproximadamente un 35% de vulnerabilidades (Common Vulnerabilities and Exposures- CVEs) que no son propias de productos Oracle,  es decir,  de los 334 parches de seguridad proporcionados por este CPU, 117 son para CVEs de productos "non-Oracle", lo cual implica correcciones de seguridad para productos de terceros (por ejemplo, componentes de código abierto) que si son incluidos en las distribuciones tradicionales de productos de Oracle. En varios casos, el mismo CVE aparece varias veces en el “Critical Patch Update Advisory”, porque un componente con determinada vulnerabilidad (por ejemplo, Apache) puede estar presente en muchos productos Oracle diferentes.

El estándar CVSS v3 considera que las vulnerabilidades con un puntaje base de CVSS entre 9.0 y 10.0 tienen una calificación cualitativa de "Crítica". Las vulnerabilidades con un puntaje base de CVSS entre 7.0 y 8.9 tienen una calificación cualitativa de "Alta". Al igual que con el CPU anterior, la cantidad de CVEs que no son propias de Oracle,  representan una cantidad significativa de expuestos críticos y de alta gravedad: 27 de las 117 CVE que no son propias de productos Oracle, son por vulnerabilidades altas y críticas. Lo cual resulta significativo.

En cuanto a bases de datos, este CPU de enero 2020 incluye 12 nuevos parches de seguridad para Database Server. El puntaje base más alto de CVSS para estas vulnerabilidades  es 7.7, con lo cual ninguna de ellas alcanza el grado de "crítica". Tres de estas 12 vulnerabilidades pueden explotarse de forma remota sin autenticación, es decir, pueden explotarse en una red sin requerir credenciales de usuario (es algo para tener en cuenta). Por otro lado,  ninguno de estos parches es aplicable a instalaciones "only-client", es decir, instalaciones que no tienen instalado Oracle Database Server.

CVE#
Description
CVE-2019-10072
Vulnerability in the Workload Manager (Apache Tomcat) component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Workload Manager (Apache Tomcat). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Workload Manager (Apache Tomcat).

Note: This patch addresses also additional three vulnerabilities: CVE-2018-11784, CVE-2019-0199, CVE-2019-0221 and CVE-2019-0232. For Windows platform - due to CVE-2019-0232 - the CVSS 3.0 score is 8.1.

CVSS v3.0 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
CVE-2020-2510
Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via OracleNet to compromise Core RDBMS. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Core RDBMS.

CVSS v3.0 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).
CVE-2020-2511
Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise Core RDBMS. While the vulnerability is in Core RDBMS, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Core RDBMS.

CVSS v3.0 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).
CVE-2020-2512
Vulnerability in the Database Gateway for ODBC component of Oracle Database Server. Supported versions that are affected are 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via OracleNet to compromise Database Gateway for ODBC. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Database Gateway for ODBC.

CVSS v3.0 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
CVE-2020-2515
Vulnerability in the Database Gateway for ODBC component of Oracle Database Server. Supported versions that are affected are 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c and 19c. Difficult to exploit vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise Database Gateway for ODBC. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Database Gateway for ODBC accessible data as well as unauthorized read access to a subset of Database Gateway for ODBC accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Database Gateway for ODBC.

CVSS v3.0 Base Score 5.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L). 
CVE-2020-2516
Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows high privileged attacker having Create Materialized View, Create Table privilege with network access via OracleNet to compromise Core RDBMS. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Core RDBMS accessible data.

CVSS v3.0 Base Score 2.4 (Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N).
CVE-2020-2517
Vulnerability in the Database Gateway for ODBC component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 18c and 19c. Difficult to exploit vulnerability allows high privileged attacker having Create Procedure, Create Database Link privilege with network access via OracleNet to compromise Database Gateway for ODBC. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Database Gateway for ODBC accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Database Gateway for ODBC.

CVSS v3.0 Base Score 3.3 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L).
CVE-2020-2518
Vulnerability in the Java VM component of Oracle Database Server. Supported versions that are affected are 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c and 19c. Difficult to exploit vulnerability allows low privileged attacker having Create Session privilege with network access via multiple protocols to compromise Java VM. Successful attacks of this vulnerability can result in takeover of Java VM.

CVSS v3.0 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
CVE-2020-2527
Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows high privileged attacker having Create Index, Create Table privilege with network access via OracleNet to compromise Core RDBMS. While the vulnerability is in Core RDBMS, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Core RDBMS accessible data.

CVSS v3.0 Base Score 4.1 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N).
CVE-2020-2568
Vulnerability in the Oracle Applications DBA component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Local Logon privilege with logon to the infrastructure where Oracle Applications DBA executes to compromise Oracle Applications DBA. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Applications DBA accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Applications DBA.

CVSS v3.0 Base Score 3.9 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L).
CVE-2020-2569
Vulnerability in the Oracle Applications DBA component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Local Logon privilege with logon to the infrastructure where Oracle Applications DBA executes to compromise Oracle Applications DBA. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Applications DBA accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Applications DBA.

CVSS v3.0 Base Score 3.9 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L).
CVE-2020-2731
Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Local Logon privilege with logon to the infrastructure where Core RDBMS executes to compromise Core RDBMS. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Core RDBMS accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Core RDBMS.

CVSS v3.0 Base Score 3.9 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L).

Oracle,  como siempre lo hace, sugiere a sus clientes que permanezcan en versiones con soporte activo y recomienda fuertemente que se apliquen los parches de seguridad necesarios sin demora.

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