Oracle Support Tools: Access Privileged Data -- Remote/Unauthenticated

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                         AUSCERT Security Bulletin

                               ASB-2018.0093
                  Security Advisory: Oracle Support Tools
                               18 April 2018

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

Product:              Oracle Support Tools
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Access Privileged Data -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
CVE Names:            CVE-2017-3736  
Member content until: Friday, May 18 2018
Reference:            ASB-2018.0081
                      ASB-2018.0078
                      ASB-2018.0033
                      ASB-2018.0026

OVERVIEW

        A vulnerability has been identified in OSS Support Tools, versions 
        prior to 18.2  [1]


IMPACT

        The vendor has provided the following information regarding
        the vulnerability:
        
        "This Critical Patch Update contains 1 new security fix for
        Oracle Support Tools.   This vulnerability is not remotely
        exploitable without authentication,  i.e.,  may not be
        exploited over a network without requiring user
        credentials." [1]
        
        
        
        "CVE-2017-3736
        
        5.9
        
        AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
        
        Supported versions that are affected are 4.4.1.5.0,
        5.0.0.1.0, 5.0.0.2.0, 5.0.1.0.0 and  5.0.2.0.0. Difficult to
        exploit vulnerability allows unauthenticated attacker with
        network access via TLS to compromise Oracle Communications
        Network Charging and Control.  Successful attacks of this
        vulnerability can result in  unauthorized access to critical
        data or complete access to all Oracle Communications Network
        Charging and Control accessible data." [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 2018
            http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

        [2] Text Form of Oracle Critical Patch Update - April 2018 Risk
            Matrices
            http://www.oracle.com/technetwork/security-advisory/cpuapr2018verbose-3678108.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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