Oracle Construction and Engineering Suite: Multiple vulnerabilities

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                         AUSCERT Security Bulletin

                               ASB-2018.0016
          Multiple vulnerabilities have been identified in Oracle
                    Construction and Engineering Suite
                              17 January 2018

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

Product:              Oracle Construction and Engineering Suite
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Modify Arbitrary Files   -- Existing Account
                      Access Confidential Data -- Existing Account
Resolution:           Patch/Upgrade
CVE Names:            CVE-2018-2620  
Member content until: Friday, February 16 2018

OVERVIEW

        Multiple vulnerabilities have been identified in 
         Primavera Unifier, versions  10.x,  15.x,  16.x,  17.x
        [1]


IMPACT

        The vendor has provided the following information regarding
        the vulnerability:
        
        "This Critical Patch Update contains 1 new security fix for
        the Oracle Construction and Engineering Suite. This
        vulnerability is not remotely exploitable without
        authentication,  i.e.,  may not be exploited over a network
        without requiring user credentials." [1]
        
        "CVE-2018-2620
        
        8.1
        
        AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
        
        Supported versions that are affected are 10.x, 15.x, 16.x
        and  17.x. Easily exploitable vulnerability allows low
        privileged attacker with network access via HTTP to
        compromise Primavera Unifier.  Successful attacks of this
        vulnerability can result in  unauthorized creation, deletion
        or modification access to critical data or all Primavera
        Unifier accessible data as well as  unauthorized access to
        critical data or complete access to all Primavera Unifier
        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 - January 2018
            http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmL

        [2] Text Form of Oracle Critical Patch Update - January 2018 Risk
            Matrices
            http://www.oracle.com/technetwork/security-advisory/cpujan2018verbose-3236630.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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