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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2019.0197 Oracle Database Server CPU 17 July 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Oracle Application Express Oracle Database Server Operating System: UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Confidential Data -- Existing Account Modify Arbitrary Files -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-2799 CVE-2019-2776 CVE-2019-2753 CVE-2019-2749 CVE-2019-2569 CVE-2019-2484 CVE-2018-11058 CVE-2016-9572 Member content until: Friday, August 16 2019 Reference: ESB-2017.0016 OVERVIEW Multiple vulnerabilities have been identified in: o Application Express, versions 5.1, 18.2 o Oracle Database Server, versions 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, 19c [1] IMPACT The vendor has provided the following information regarding the vulnerabilities: "This Critical Patch Update contains 8 new security fixes for the Oracle Database Server. 1 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials. 3 of these fixes are applicable to client-only installations, i.e., installations that do not have the Oracle Database Server installed." [1] CVE-2018-11058 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise the affected system. Successful attacks of this vulnerability can result in takeover of the affected system. Affects: o Core RDBMS 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, 19c CVE-2019-2776 7.6 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N Easily exploitable vulnerability allows high privileged attacker having Create Any Index privilege with network access via OracleNet to compromise the affected system. While the vulnerability is in the affected system, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all the affected system's accessible data as well as unauthorized update, insert or delete access to some of the affected system's accessible data. Affects: o Core RDBMS 12.1.0.2, 12.2.0.1, 18c, 19c CVE-2019-2799 7.5 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Difficult to exploit vulnerability allows low privileged attacker having None privilege with network access via multiple protocols to compromise the affected system. Successful attacks of this vulnerability can result in takeover of the affected system. Affects: o Oracle ODBC Driver 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c CVE-2019-2749 6.8 AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H Difficult to exploit vulnerability allows low privileged attacker having Create Session, Create Procedure privilege with network access via multiple protocols to compromise the affected system. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all the affected system's accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of the affected system. Affects: o Java VM 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, 19c CVE-2019-2484 5.4 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Easily exploitable vulnerability allows low privileged attacker having Valid Account privilege with network access via HTTP to compromise the affected system. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in the affected system, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of the affected system's accessible data as well as unauthorized read access to a subset of the affected system's accessible data. Affects: o Application Express 5.1, 18.2 CVE-2019-2753 4.6 AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise the affected system. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of the affected system's accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of the affected system. Affects: o Oracle Text 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c CVE-2019-2569 4.0 AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N Difficult to exploit vulnerability allows high privileged attacker having Local Logon privilege with logon to the infrastructure where the affected system executes to compromise the affected system. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all the affected system's accessible data. Affects: o Core RDBMS 11.2.0.4, 12.1.0.2, 12.2.0.1 CVE-2016-9572 3.5 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise the affected system. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of the affected system. Affects: o Spatial 12.2.0.1, 18c" [1] MITIGATION Oracle states: "Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply CPU fixes as soon as possible. Until you apply the CPU fixes, it may be possible to reduce the risk of successful attack by blocking network protocols required by an attack. For attacks that require certain privileges or access to certain packages, removing the privileges or the ability to access the packages from users that do not need the privileges may help reduce the risk of successful attack. Both approaches may break application functionality, so Oracle strongly recommends that customers test changes on non-production systems. Neither approach should be considered a long-term solution as neither corrects the underlying problem." [1] REFERENCES [1] Oracle Critical Patch Update Advisory - July 2019 https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html [2] Text Form of Oracle Critical Patch Update - July 2019 Risk Matrices https://www.oracle.com/technetwork/security-advisory/cpujul2019verbose-5072838.html AusCERT has made every effort to ensure that the information contained in this document is accurate. However, the decision to use the information described is the responsibility of each user or organisation. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXS6xoWaOgq3Tt24GAQj8MA/+KQ5/CccYtduC53k90eUMZJj9gkLd7JIT tpIAVvrFzqaOfJdtj9yXMsNejtHXwAYxDrZAGHAXPN5ovtpoQWIpAwXkE1XHsDLo xGhlfAFY1sLmPJlAxKlfL7fZ3rjyHriS7UJ/0cyXkNOggPPtHZbnz4PRD412zi7L h3bSsoWC95h7Di4XrSgwWNe5poZs7GHt/C/0UqtUYFHO30aRD4ClFUw0ZkA13n8T 04tABlxx6dyX5BOtN+L6FH30m6M6VIc9GkRqCNoXTU28nudfaVXgsylEpeO1B7dk Wbjs0rbc5ifkp3BJeCtvnqbEKR3ZlXfxQJn8NV7tDc7lP8vUnlQX0V6xg8Me8w8a ho5Jv6yLisQGnkJHC+/k2oUPBXHOrj1osL2ReJYiHJyuCttiohxNvdkoOEvYO0wD /X6lVgUJuSXUFgbTjAb49LUW9z3V0/BaQsTSAhFNCqb25W5uB6t8dp+TnOkacBte S4KQIHH6eR8q21abiNLa8zrR6sqgOVBVVA7YRclm2uKJIlPp1+S0KCw9zcni/gSA ha67FLF/d8bRxN+rqBHRf05meithm8CZkXP1Hyj5Ep8am+Z9rQ2jlvkTsb/VitXK uNZapN0hPtjNo9Tl2j/txlSHrc+LCcZrVrlKMCmVoeuuEEVeyUe16w/5SvMU4/ul lu9LnU/ntsk= =aHOT -----END PGP SIGNATURE-----