Oracle Support Tools: Multiple vulnerabilities

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                         AUSCERT Security Bulletin

                               ASB-2021.0142
                Oracle Support Tools Critical Patch Update
                               21 July 2021

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

Product:          Oracle Support Tools
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
Impact/Access:    Modify Arbitrary Files   -- Remote with User Interaction
                  Read-only Data Access    -- Remote with User Interaction
                  Access Confidential Data -- Remote with User Interaction
Resolution:       Patch/Upgrade
CVE Names:        CVE-2020-11023  
Reference:        ASB-2020.0170
                  ESB-2021.0923
                  ESB-2021.0620

OVERVIEW

        Multiple vulnerabilities have been identified in :
         o OSS Support Tools, versions prior to 2.12.41
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerabilities:
        
        "This Critical Patch Update contains 1 new security patch for Oracle
        Support Tools. This vulnerability is remotely exploitable without
        authentication, i.e., may be exploited over a network without
        requiring user credentials." [1]
        
        CVE-2020-11023
          6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
        The supported version that is affected is Prior to 2.12.41. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise OSS Support Tools. Successful
        attacks require human interaction from a person other than the
        attacker and while the vulnerability is in OSS Support Tools, attacks
        may significantly impact additional products. Successful attacks of
        this vulnerability can result in unauthorized update, insert or
        delete access to some of OSS Support Tools accessible data as well as
        unauthorized read access to a subset of OSS Support Tools accessible
        data.
         Affects:
         o OSS Support Tools Prior to 2.12.41


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.

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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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                On call after hours for member emergencies only.
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