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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2021.0012 Oracle Database Server Critical Patch Update 21 January 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Oracle Application Express Opportunity Tracker Oracle Application Express Survey Builder Oracle Database Server Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Modify Arbitrary Files -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-2117 CVE-2021-2116 CVE-2021-2054 CVE-2021-2045 CVE-2021-2035 CVE-2021-2018 CVE-2021-2000 CVE-2021-1993 Member content until: Saturday, February 20 2021 OVERVIEW Multiple vulnerabilities have been identified in : o Oracle Application Express Opportunity Tracker, versions prior to 20.2 o Oracle Application Express Survey Builder, versions prior to 20.2 o Oracle Database Server, versions 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 patches plus additional third party patches noted below for Oracle Database Products. 1 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials. None of these patches are applicable to client-only installations, i.e., installations that do not have the Oracle Database Server installed." [1] CVE-2021-2035 8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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 Export Full Database privilege with network access via Oracle Net to compromise the affected system. Successful attacks of this vulnerability can result in takeover of the affected system. Affects: o RDBMS Scheduler 12.1.0.2, 12.2.0.1, 18c, 19c CVE-2021-2018 8.3 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Supported versions that are affected are 18c and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net 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 takeover of the affected system. Note : CVE-2021-2018 affects Windows platform only. Affects: o Advanced Networking Option 18c, 19c CVE-2021-2054 7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Supported versions that are affected are 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows high privileged attacker having Create Any Procedure, Create Any View, Create Any Trigger privilege with network access via Oracle Net to compromise the affected system. Successful attacks of this vulnerability can result in takeover of the affected system. Affects: o RDBMS Sharding 12.2.0.1, 18c, 19c CVE-2021-2116 5.4 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N The supported version that is affected is Prior to 20.2. Easily exploitable vulnerability allows low privileged attacker having Valid User 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 Oracle Application Express Opportunity Tracker Prior to 20.2 CVE-2021-2117 5.4 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N The supported version that is affected is Prior to 20.2. Easily exploitable vulnerability allows low privileged attacker having Valid User 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 Oracle Application Express Survey Builder Prior to 20.2 CVE-2021-1993 4.8 AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N Supported versions that are affected are 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 Oracle Net 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 creation, deletion or modification access to critical data or all the affected system's accessible data. Affects: o Java VM 12.1.0.2, 12.2.0.1, 18c, 19c CVE-2021-2045 3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L Supported versions that are affected are 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 Oracle Net to compromise the affected system. 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 Oracle Text 12.1.0.2, 12.2.0.1, 18c, 19c CVE-2021-2000 2.4 AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N 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 SYS Account privilege with network access via Oracle Net 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 update, insert or delete access to some of the affected system's accessible data. Affects: o Unified Audit 12.1.0.2, 12.2.0.1, 18c, 19c 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 - January 2021 https://www.oracle.com/security-alerts/cpujan2021.html [2] Text Form of Oracle Critical Patch Update - January 2021 Risk Matrices https://www.oracle.com/security-alerts/cpujan2021verbose.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 iQIVAwUBYAisCeNLKJtyKPYoAQhQ4w/+N+nnhwi+K6Z5M2u3AjpcSa8TbEXD6pFa lkmyV6MXNmwf39FgH3cs21aWE7DArPiJoG2Xfpwg8oBXI8RDkJonzbhxBHE3ZauG HPoB500QlL/GZPL9CAHIAb2wEWtdjoB+ZKPaLnFXHB9r6sTWtNKYYnRXd8MpMYdx dgECWAbXxefnEl6QDPLHNr1B8Z2UI4Q9TBpphOCLSegRGN1Dmee8WDcZ3JtgM8VE 0Xk5/u2zCNcX6VC+IKueXuY3/4k+OMOmEWQOYsJikO5eT6k1XWSRzqtVVsSv/5Ew EhPBbiSwYjGNhmS0zK8eB6sH+mIM24tO19RdHPOIs/9waUoqYH6BftF5ewX3SfCL f/pEYkxk6Nt8CZ+HzZdCjHMVFNVHr44s/pozca+Hb859yOeqwGwDBBNMxaSWqdQL Qlc55tz7Uy3sCpEAzTeJjYE09gO2Nu5sTg5Z2SN3eJZZ/vdnEa4YbUIY2KaP787S Y4QgEn1gmLZtAkXYAvcY5jALGYgLFtio5SQbwFK+jNv0j1oRi0Jsq2yJ8VhFpRl+ jOdeEeHyY4WEgB+dLCKOz11QkKqMguHsgv1sTAzpuIGoEvaf0ga0SLW7DQipPhNi 4XrwbxBh2TReqtgB+ufDMHgNQqu5J/Gee6IBtpj/qAHdIdJUnA2Tuozwpn/iSJ37 XTUO6dC6ONE= =b794 -----END PGP SIGNATURE-----