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                         AUSCERT Security Bulletin

                               ASB-2022.0155
               Oracle E-Business Suite Critical Patch Update
                               20 July 2022

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:          Oracle E-Business Suite
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
Resolution:       Patch/Upgrade
CVE Names:        CVE-2022-23305 CVE-2022-21568 CVE-2022-21567
                  CVE-2022-21566 CVE-2022-21545 CVE-2022-21500

Comment: CVSS (Max):  9.8* CVE-2022-23305 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
         * Not all CVSS available when published

OVERVIEW

        Multiple vulnerabilities have been identified in :
         o Oracle E-Business Suite, versions 12.2.3-12.2.11
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerabilities:
        
        "This Critical Patch Update contains 6 new security patches for
        Oracle E-Business Suite. 5 of these vulnerabilities may be remotely
        exploitable without authentication, i.e., may be exploited over a
        network without requiring user credentials." [1]
        
        "CVE-2022-23305
          9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
        Supported versions that are affected are 12.2.3-12.2.11. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle E-Business Suite
        Information Discovery. Successful attacks of this vulnerability can
        result in takeover of Oracle E-Business Suite Information Discovery.
         Affects:
         o Oracle E-Business Suite Information Discovery 12.2.3-12.2.11
        
        CVE-2022-21566
          7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
        Supported versions that are affected are 12.2.9-12.2.11. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle Applications Framework.
        Successful attacks of this vulnerability can result in unauthorized
        access to critical data or complete access to all Oracle Applications
        Framework accessible data.
         Affects:
         o Oracle Applications Framework 12.2.9-12.2.11
        
        CVE-2022-21500
          7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
        Supported versions that are affected are 12.2.4-12.2.11. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle User Management.
        Successful attacks of this vulnerability can result in unauthorized
        access to critical data or complete access to all Oracle User
        Management accessible data.
         Affects:
         o Oracle User Management 12.2.4-12.2.11
        
        CVE-2022-21567
          7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
        Supported versions that are affected are 12.2.3-12.2.11. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle Workflow. Successful
        attacks of this vulnerability can result in unauthorized access to
        critical data or complete access to all Oracle Workflow accessible
        data.
         Affects:
         o Oracle Workflow 12.2.3-12.2.11
        
        CVE-2022-21568
          6.5 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
        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 iReceivables. Successful attacks
        of this vulnerability can result in unauthorized access to critical
        data or complete access to all Oracle iReceivables accessible data.
         Affects:
         o Oracle iReceivables 12.2.3-12.2.11
        
        CVE-2022-21545
          5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
        Supported versions that are affected are 12.2.3-12.2.11. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle iRecruitment. Successful
        attacks of this vulnerability can result in unauthorized read access
        to a subset of Oracle iRecruitment accessible data.
         Affects:
         o Oracle iRecruitment 12.2.3-12.2.11" [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 - July 2022
            https://www.oracle.com/security-alerts/cpujul2022.html

        [2] Text Form of Oracle Critical Patch Update - July 2022 Risk Matrices
            https://www.oracle.com/security-alerts/cpujul2022verbose.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.
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