Oracle Global Lifecycle Management OPatch: Access Confidential Data -- Remote with User Interaction

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                         AUSCERT Security Bulletin

                               ASB-2021.0097
         Oracle Global Lifecycle Management Critical Patch Update
                               21 April 2021

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

Product:          Oracle Global Lifecycle Management OPatch
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
Impact/Access:    Access Confidential Data -- Remote with User Interaction
Resolution:       Patch/Upgrade
CVE Names:        CVE-2019-3740  
Reference:        ASB-2021.0083
                  ASB-2021.0080
                  ASB-2021.0072
                  ASB-2020.0193
                  ASB-2020.0183

OVERVIEW

        Multiple vulnerabilities have been identified in :
         o Oracle Global Lifecycle Management OPatch, versions prior to
           12.2.0.1.22
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerabilities:
        
        "This Critical Patch Update contains 1 new security patch plus
        additional third party patches noted below for Oracle Global
        Lifecycle Management. This vulnerability is remotely exploitable
        without authentication, i.e., may be exploited over a network without
        requiring user credentials." [1]
        
        CVE-2019-3740
          6.5 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
        The supported version that is affected is Prior to 12.2.0.1.22.
        Easily exploitable vulnerability allows unauthenticated attacker with
        network access via Oracle Net to compromise Oracle Global Lifecycle
        Management OPatch. Successful attacks require human interaction from
        a person other than the attacker. Successful attacks of this
        vulnerability can result in unauthorized access to critical data or
        complete access to all Oracle Global Lifecycle Management OPatch
        accessible data.
         Affects:
         o Oracle Global Lifecycle Management OPatch Prior to 12.2.0.1.22


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 2021
            https://www.oracle.com/security-alerts/cpuapr2021.html

        [2] Text Form of Oracle Critical Patch Update - April 2021 Risk
            Matrices
            https://www.oracle.com/security-alerts/cpuapr2021verbose.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)
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                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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