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                         AUSCERT Security Bulletin

                               ASB-2021.0096
                Oracle NoSQL Database Critical Patch Update
                               21 April 2021

===========================================================================

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

Product:          Oracle NoSQL Database
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
Impact/Access:    Modify Arbitrary Files   -- Remote/Unauthenticated
                  Delete Arbitrary Files   -- Remote/Unauthenticated
                  Denial of Service        -- Remote/Unauthenticated
                  Access Confidential Data -- Remote/Unauthenticated
Resolution:       Patch/Upgrade
CVE Names:        CVE-2021-22883 CVE-2020-13956 CVE-2020-11612
                  CVE-2020-8908  
Reference:        ASB-2021.0093
                  ASB-2021.0085
                  ASB-2021.0018
                  ESB-2021.1144
                  ESB-2020.3539
                  ESB-2020.3500

OVERVIEW

        Multiple vulnerabilities have been identified in :
         o Oracle NoSQL Database, versions prior to 20.3
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerabilities:
        
        "This Critical Patch Update contains 4 new security patches plus
        additional third party patches noted below for Oracle NoSQL Database.
        3 of these vulnerabilities may be remotely exploitable without
        authentication, i.e., may be exploited over a network without
        requiring user credentials." [1]
        
        CVE-2020-13956
          7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
        The supported version that is affected is Prior to 20.3. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle NoSQL Database.
        Successful attacks of this vulnerability can result in unauthorized
        creation, deletion or modification access to critical data or all
        Oracle NoSQL Database accessible data.
         Affects:
         o Oracle NoSQL Database Prior to 20.3
        
        CVE-2020-11612
          7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
        The supported version that is affected is Prior to 20.3. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle NoSQL Database.
        Successful attacks of this vulnerability can result in unauthorized
        ability to cause a hang or frequently repeatable crash (complete DOS)
        of Oracle NoSQL Database.
         Affects:
         o Oracle NoSQL Database Prior to 20.3
        
        CVE-2021-22883
          7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
        The supported version that is affected is Prior to 20.3. Easily
        exploitable vulnerability allows unauthenticated attacker with
        network access via multiple protocols to compromise Oracle NoSQL
        Database. Successful attacks of this vulnerability can result in
        unauthorized ability to cause a hang or frequently repeatable crash
        (complete DOS) of Oracle NoSQL Database.
         Affects:
         o Oracle NoSQL Database Prior to 20.3
        
        CVE-2020-8908
          3.3 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
        The supported version that is affected is Prior to 20.3. Easily
        exploitable vulnerability allows low privileged attacker with logon
        to the infrastructure where Oracle NoSQL Database executes to
        compromise Oracle NoSQL Database. Successful attacks of this
        vulnerability can result in unauthorized read access to a subset of
        Oracle NoSQL Database accessible data.
         Affects:
         o Oracle NoSQL Database Prior to 20.3


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 2021
            https://www.oracle.com/security-alerts/cpuapr2021.html

        [2] Text Form of Oracle Critical Patch Update - April 2021 Risk
            Matrices
            https://www.oracle.com/security-alerts/cpuapr2021verbose.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.

===========================================================================
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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