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AUSCERT Security Bulletin
ASB-2023.0085
Oracle E-Business Suite Critical Patch Update
19 April 2023
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AusCERT Security Bulletin Summary
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Product: Oracle E-Business Suite
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2023-21997 CVE-2023-21978 CVE-2023-21973
CVE-2023-21959
Comment: CVSS (Max): 6.5 CVE-2023-21978 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L)
CVSS Source: Oracle
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle E-Business Suite, versions 12.2.3-12.2.12
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 4 new security patches for
Oracle E-Business Suite. None of these vulnerabilities may be
remotely exploitable without authentication, i.e., none may be
exploited over a network without requiring user credentials." [1]
"CVE-2023-21978
6.5 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Supported versions that are affected are 12.2.3-12.2.11. Easily
exploitable vulnerability allows low privileged attacker with network
access via HTTP to compromise Oracle Application Object Library.
Successful attacks require human interaction from a person other than
the attacker and while the vulnerability is in Oracle Application
Object Library, attacks may significantly impact additional products
(scope change). Successful attacks of this vulnerability can result
in unauthorized update, insert or delete access to some of Oracle
Application Object Library accessible data as well as unauthorized
read access to a subset of Oracle Application Object Library
accessible data and unauthorized ability to cause a partial denial of
service (partial DOS) of Oracle Application Object Library.
Affects:
o Oracle Application Object Library 12.2.3-12.2.11
CVE-2023-21973
5.4 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Supported versions that are affected are 12.2.3-12.2.12. Easily
exploitable vulnerability allows low privileged attacker with network
access via HTTP to compromise Oracle iProcurement. Successful attacks
require human interaction from a person other than the attacker and
while the vulnerability is in Oracle iProcurement, attacks may
significantly impact additional products (scope change). Successful
attacks of this vulnerability can result in unauthorized update,
insert or delete access to some of Oracle iProcurement accessible
data as well as unauthorized read access to a subset of Oracle
iProcurement accessible data.
Affects:
o Oracle iProcurement 12.2.3-12.2.12
CVE-2023-21959
4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Supported versions that are affected are 12.2.3-12.2.12. Easily
exploitable vulnerability allows low privileged attacker with network
access via HTTP to compromise Oracle iReceivables. Successful attacks
of this vulnerability can result in unauthorized read access to a
subset of Oracle iReceivables accessible data.
Affects:
o Oracle iReceivables 12.2.3-12.2.12
CVE-2023-21997
4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Supported versions that are affected are 12.2.3-12.2.12. Easily
exploitable vulnerability allows low privileged attacker with network
access via HTTP to compromise Oracle User Management. Successful
attacks of this vulnerability can result in unauthorized read access
to a subset of Oracle User Management accessible data.
Affects:
o Oracle User Management 12.2.3-12.2.12" [2]
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 - April 2023
https://www.oracle.com/security-alerts/cpuapr2023.html
[2] Text Form of Oracle Critical Patch Update - April 2023 Risk
Matrices
https://www.oracle.com/security-alerts/cpuapr2023verbose.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.
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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.
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