Oracle SQL Developer: Multiple vulnerabilities

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
                         AUSCERT Security Bulletin

                               ASB-2021.0092
                Oracle SQL Developer Critical Patch Update
                               21 April 2021

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

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

Product:          Oracle SQL Developer
Operating System: Windows
                  UNIX variants (UNIX, Linux, OSX)
Impact/Access:    Modify Arbitrary Files   -- Remote/Unauthenticated
                  Delete Arbitrary Files   -- Remote/Unauthenticated
                  Access Confidential Data -- Remote/Unauthenticated
Resolution:       Patch/Upgrade
CVE Names:        CVE-2020-13956  
Reference:        ESB-2021.1098
                  ESB-2020.3539
                  ESB-2020.3500

OVERVIEW

        Multiple vulnerabilities have been identified in :
         o Oracle SQL Developer, versions prior to 20.4.1.407.6
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerabilities:
        
        "This Critical Patch Update contains 1 new security patch plus
        additional third party patches noted below for Oracle SQL Developer.
        This vulnerability is 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 20.4.1.407.0006.
        Easily exploitable vulnerability allows unauthenticated attacker with
        network access via HTTP to compromise Oracle SQL Developer (Apache
        HttpClient). Successful attacks of this vulnerability can result in
        unauthorized creation, deletion or modification access to critical
        data or all Oracle SQL Developer (Apache HttpClient) accessible data.
         Affects:
         o Oracle SQL Developer (Apache HttpClient) Prior to
           20.4.1.407.0006


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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=C9nj
-----END PGP SIGNATURE-----