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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2021.0221 Oracle Essbase Critical Patch Update 20 October 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Essbase Administration Services Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Modify Arbitrary Files -- Existing Account Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-35655 CVE-2021-35654 CVE-2021-35653 CVE-2021-35652 CVE-2021-35651 OVERVIEW Multiple vulnerabilities have been identified in : o Essbase Administration Services, versions prior to 11.1.2.4.46 [1] IMPACT The vendor has provided the following information regarding the vulnerabilities: "This Critical Patch Update contains 5 new security patches for Oracle Essbase. 3 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials." [1] CVE-2021-35651 8.5 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N The supported version that is affected is Prior to 11.1.2.4.046. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Essbase Administration Services. While the vulnerability is in Essbase Administration Services, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Essbase Administration Services accessible data as well as unauthorized update, insert or delete access to some of Essbase Administration Services accessible data. Affects: o Essbase Administration Services Prior to 11.1.2.4.046 CVE-2021-35653 7.7 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N The supported version that is affected is Prior to 11.1.2.4.046. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Essbase Administration Services. While the vulnerability is in Essbase Administration Services, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Essbase Administration Services accessible data. Affects: o Essbase Administration Services Prior to 11.1.2.4.046 CVE-2021-35654 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H The supported version that is affected is Prior to 11.1.2.4.046. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Essbase Administration Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Essbase Administration Services. Affects: o Essbase Administration Services Prior to 11.1.2.4.046 CVE-2021-35655 5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N The supported version that is affected is Prior to 11.1.2.4.046. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Essbase Administration Services. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Essbase Administration Services accessible data. Affects: o Essbase Administration Services Prior to 11.1.2.4.046 CVE-2021-35652 10.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H The supported version that is affected is Prior to 11.1.2.4.046. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Essbase Administration Services. While the vulnerability is in Essbase Administration Services, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Essbase Administration Services. Affects: o Essbase Administration Services Prior to 11.1.2.4.046 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 - October 2021 https://www.oracle.com/security-alerts/cpuoct2021.html [2] Text Form of Oracle Critical Patch Update - October 2021 Risk Matrices https://www.oracle.com/security-alerts/cpuoct2021verbose.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 iQIVAwUBYW+dkONLKJtyKPYoAQhI1g//c217hAFXLzo/j65o2u9u+0c40SGfHUXT 9eGMicNs7nQZYUoTmZhOqEdKpWCEsWklACbhlUHa7+9kiN+1hMv8YU5EfgYFbSq+ requ6XWwS+eaVoXaMvhb71rcOB6WanCDoUdpfEsEbEkTAK6m+k8tBzkilFqjDtSS jNoTXqj1upjF48OgqkuGYiNogkyZgN+pr+RLBfFG9QleA3pcXOBu7d/rSqlw+EYz 2KHoyDH4LHMNR7AyBnjg0fk8z4zEBv2yongm/wXeKVnIzRulTuqtf596ht5x6asa 1cBjcaafNf+p8Smdtpc1wKAL5E+rm2S/Ag3mqmqiyZwgwSD+U0aY2AW/gJuy3Mcq MeR/1XGCuK7IJy8wPk44zKpps1qCyYb260jcWCe25c4c4CUPmGH973NLWMZVuADk IdLjBiLhrsW37f+9R3Rx1G47codk4+LzITLchJOfP/FePg5ydViIkVUHxOe3oDD9 SrjYeyy7h75zXtChZPyx9KvekhEcFtYYuI3SNwFeLalGn23RtsrJCcTnK+U9sSfp QR9NLwn7aEtMCBzaO9gMnRjhpJXT3nCgdUtJI+/dzHt8kGrEQjpfqb5BwY+rOG7H W2RptvZbhwV0+DxpousaV1wPIk73+bclzgN8iY/PiX+cvC1IJUg232XahUDgWncv 2+vIaZfwY0A= =/nNt -----END PGP SIGNATURE-----