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                         AUSCERT Security Bulletin

                               ASB-2017.0035
             Oracle Database Server: Multiple Vulnerabilities
                               19 April 2017

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

Product:              Oracle Database Server
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Administrator Compromise -- Existing Account
                      Denial of Service        -- Existing Account
Resolution:           Patch/Upgrade
CVE Names:            CVE-2017-3567 CVE-2017-3486 
Member content until: Friday, May 19 2017

OVERVIEW

        Multiple vulnerabilities have been identified in Oracle Database 
        Server, version(s) 11.2.0.4, 12.1.0.2. [1]


IMPACT

        The vendor has provided the following information:
        
        "CVE-2017-3486 7.2 AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
        Difficult to exploit vulnerability allows high privileged attacker 
        having Local Logon privilege with logon to the infrastructure where
        SQL*Plus executes to compromise SQL*Plus. Successful attacks require
        human interaction from a person other than the attacker and while 
        the vulnerability is in SQL*Plus, attacks may significantly impact 
        additional products. Successful attacks of this vulnerability can 
        result in takeover of SQL*Plus. Note: This score is for Windows 
        platform version 11.2.0.4 of Database. For Windows platform version
        12.1.0.2 and Linux, the score is 6.3 with scope Unchanged.
        
        CVE-2017-3567 5.3 AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
        Difficult to exploit vulnerability allows low privileged attacker 
        having Create Session, Create Procedure privilege with network 
        access via multiple protocols to compromise OJVM. Successful attacks
        of this vulnerability can result in unauthorized ability to cause a
        hang or frequently repeatable crash (complete DOS) of OJVM."[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 2017
            http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html

        [2] Text Form of Oracle Critical Patch Update - April 2017 Risk
            Matrices
            https://www.oracle.com/technetwork/topics/security/cpuapr2017verbose-3236619.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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