Oracle Hospitality Applications: CVSS (Max): 8.8

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                         AUSCERT Security Bulletin

                               ASB-2023.0030
           Oracle Hospitality Applications Critical Patch Update
                              18 January 2023

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

Product:          Oracle Hospitality Applications
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
Resolution:       Patch/Upgrade
CVE Names:        CVE-2021-36483  

Comment: CVSS (Max):  8.8 CVE-2021-36483 (CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:N/S:U/C:H/I:H/A:H

OVERVIEW

        A vulnerability has been identified in :
         o Oracle Hospitality Cruise Shipboard Property Management System,
           version 20.2.2
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerability:
        
        "This Critical Patch Update contains 1 new security patch for Oracle
        Hospitality Applications. This vulnerability is not remotely
        exploitable without authentication, i.e., may not be exploited over a
        network without requiring user credentials." [1]
        
        "CVE-2021-36483
         8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
        The supported version that is affected is 20.2.2. Easily exploitable
        vulnerability allows low privileged attacker with network access via
        HTTP to compromise Oracle Hospitality Cruise Shipboard Property
        Management System. Successful attacks of this vulnerability can
        result in takeover of Oracle Hospitality Cruise Shipboard Property
        Management System.
         Affects:
         o Oracle Hospitality Cruise Shipboard Property Management System
           20.2.2" [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 - January 2023
            https://www.oracle.com/security-alerts/cpujan2023.html

        [2] Text Form of Oracle Critical Patch Update - January 2023 Risk
            Matrices
            https://www.oracle.com/security-alerts/cpujan2023verbose.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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