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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2021.0143 Oracle Database Products Critical Patch Update 21 July 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Oracle Application Express Oracle Application Express Application 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 Read-only Data Access -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-2460 CVE-2021-2438 CVE-2021-2351 CVE-2021-2337 CVE-2021-2336 CVE-2021-2335 CVE-2021-2334 CVE-2021-2333 CVE-2021-2330 CVE-2021-2329 CVE-2021-2328 CVE-2021-2326 CVE-2020-27193 CVE-2020-26870 CVE-2020-7760 CVE-2019-17545 Reference: ASB-2021.0087 ASB-2021.0080 ESB-2021.2232 OVERVIEW Multiple vulnerabilities have been identified in : o Oracle Application Express, versions prior to 21.1.0.0.4 o Oracle Application Express (CKEditor), versions prior to 21.1.0.0.1 o Oracle Application Express Application Builder (DOMPurify), versions prior to 21.1.0.0.1 o Oracle Database Server, versions 12.1.0.2, 12.2.0.1, 19c [1] IMPACT The vendor has provided the following information regarding the vulnerabilities: "This Critical Patch Update contains 27 new security patches for Oracle Database Products divided as follows:" [1] CVE-2021-2351 8.3 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Supported versions that are affected are 12.1.0.2, 12.2.0.1 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 : The July 2021 Critical Patch Update introduces a number of Native Network Encryption changes to deal with vulnerability CVE-2021-2351 and prevent the use of weaker ciphers. Customers should review: “Changes in Native Network Encryption with the July 2021 Critical Patch Update†(Doc ID 2791571.1). Affects: o Advanced Networking Option 12.1.0.2, 12.2.0.1, 19c CVE-2021-2328 7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable vulnerability allows high privileged attacker having Create Any Procedure, Alter Any Table 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 Oracle Text 12.1.0.2, 12.2.0.1, 19c CVE-2021-2329 7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable vulnerability allows high privileged attacker having Create Any Procedure, Create Public Synonym 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 Oracle XML DB 12.1.0.2, 12.2.0.1, 19c CVE-2021-2337 7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable vulnerability allows high privileged attacker having Create Any Procedure, Create Public Synonym 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 Oracle XML DB 12.1.0.2, 12.2.0.1, 19c CVE-2020-27193 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 21.1.0.00.01. 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 (CKEditor) Prior to 21.1.0.00.01 CVE-2020-26870 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 21.1.0.00.01. 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 Application Builder (DOMPurify) Prior to 21.1.0.00.01 CVE-2021-2460 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 21.1.0.00.04. 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 Data Reporter Prior to 21.1.0.00.04 CVE-2021-2333 4.9 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable vulnerability allows high privileged attacker having Alter User privilege with network access via Oracle Net to compromise the affected system. 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 Oracle XML DB 12.1.0.2, 12.2.0.1, 19c CVE-2019-17545 4.4 AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H Supported versions that are affected are 12.2.0.1 and 19c. Difficult to exploit vulnerability allows low privileged attacker having Create Session 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 ability to cause a hang or frequently repeatable crash (complete DOS) of the affected system. Affects: o Oracle Spatial and Graph (GDAL) 12.2.0.1, 19c CVE-2021-2330 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L The supported version that is affected is 19c. Easily exploitable vulnerability allows low privileged attacker having Create Table 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 Core RDBMS 19c CVE-2020-7760 4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L The supported version that is affected is 19c. Easily exploitable vulnerability allows low privileged attacker having User Account privilege with network access via HTTP 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 Enterprise Manager Express User Interface (CodeMirror) 19c CVE-2021-2438 4.3 AV:N/AC:L/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 and 19c. Easily exploitable vulnerability allows low privileged attacker having Create Procedure 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 Java VM 12.1.0.2, 12.2.0.1, 19c CVE-2021-2334 3.5 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable 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 update, insert or delete access to some of the affected system's accessible data. Affects: o Oracle Database - Enterprise Edition Data Redaction 12.1.0.2, 12.2.0.1, 19c CVE-2021-2335 3.5 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable 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 update, insert or delete access to some of the affected system's accessible data. Affects: o Oracle Database - Enterprise Edition Data Redaction 12.1.0.2, 12.2.0.1, 19c CVE-2021-2336 3.5 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable 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 update, insert or delete access to some of the affected system's accessible data. Affects: o Oracle Database - Enterprise Edition Data Redaction 12.1.0.2, 12.2.0.1, 19c CVE-2021-2326 2.7 AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N Supported versions that are affected are 12.2.0.1 and 19c. Easily exploitable vulnerability allows high privileged attacker having DBA privilege with network access via Oracle Net to compromise the affected system. Successful attacks of this vulnerability can result in unauthorized read access to a subset of the affected system's accessible data. Affects: o Database Vault 12.2.0.1, 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 - July 2021 https://www.oracle.com/security-alerts/cpujul2021.html [2] Text Form of Oracle Critical Patch Update - July 2021 Risk Matrices https://www.oracle.com/security-alerts/cpujul2021verbose.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 iQIVAwUBYPd2WONLKJtyKPYoAQiQog//RKvcS/Zsk1KWmKSzObW5AWW8UrRCoeMW lK3J9aDEaZhKawk37HLtn2qTCTqkdjNklWKil8Ar+7Umj+MdHBjEDFwpgKpoKKAa lpw/3Zz/Krn+S9DvYSSyzPzcJJ7TnSZ+G6Hj+IrDTtML0OS5v2UiTS0ZfZT7rGxL l4ufFoFVWq+TNzV4+BwMEa/ov+Q4eFC0SwBNRqlwCQ7E/eniekJH3hraX7PhVpbw I0bxwz34wggu9gthVqnPpyyW8EBoxiBHhESI1o64HPi5CfXkNl/h08uFyPYBkc0E Ljeb4jLVv5TwFRJ3SGkdio8bRi+sa6vSh18wBGwbIildDsebKgKaiB3p6UzN8FAt ZZzDAY6mLwgz9Y48p2JJqP0h+VTt5bOgUGolYqQo6r0PqMdtVkF99QcusD6LKJLa +qCz9aQ4oz+11GnkjhlYxGTHhGIZeSkKU4cU5P07eUBVcxzfMDwlcBvcwMK9OGgs wg0J+UaQBWvjVnzwo/83xg/cDn93nRa5GaFFiB1aWbs2HX5cUD7JyTR6Utu0craV QwmYgjfNEYN2LzAdEkxhDPPooM7wSqYagvsir4LJD83rZ6Tj+dAOod9yQcJNMNON Aiwvu5d3P80zx1RZoKR88PQq7b+6uc1uwNYsAWk8ZQOUabzCICGdiST3SWtIrJih nA36FdEd0rc= =5ffU -----END PGP SIGNATURE-----