Oracle Support Tools: CVSS (Max): 7.5

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                         AUSCERT Security Bulletin                         
                                                                           
                               ASB-2024.0078                               
                Oracle Support Tools Critical Patch Updates                
                               17 April 2024                               
                                                                           
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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           OSS Support Tools                                       
Operating System:  Windows                                                 
                   UNIX variants (UNIX, Linux, OSX)                        
Resolution:        Patch/Upgrade                                           
CVE Names:         CVE-2023-48795 CVE-2023-1370                            

Comment: CVSS (Max):  7.5 CVE-2023-1370 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
         CVSS Source: Oracle                                               
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H



OVERVIEW

        Multiple vulnerabilities have been identified in :
         o OSS Support Tools, versions 2.12.44, 2.12.45, 23.1.23.1.17,
           24.1.24.1.16
        [1]


IMPACT

        The vendor has provided the following information regarding the
        vulnerabilities:

        "This Critical Patch Update contains 6 new security patches for
        Oracle Support Tools. All of these vulnerabilities may be remotely
        exploitable without authentication, i.e., may be exploited over a
        network without requiring user credentials." [1]

        "CVE-2023-1370
         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 2.12.44. Easily
        exploitable
        vulnerability allows unauthenticated attacker with network access
        via
        HTTP to compromise OSS Support Tools. Successful attacks of this
        vulnerability can result in unauthorized ability to cause a hang or
        frequently repeatable crash (complete DOS) of OSS Support Tools.
         Affects:
         o OSS Support Tools 2.12.44
         o OSS Support Tools 23.1.23.1.17
         o OSS Support Tools 23.1.23.1.17

        CVE-2023-48795
         5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
        The supported version that is affected is 2.12.45. Difficult to
        exploit vulnerability allows unauthenticated attacker with network
        access via SSH to compromise OSS Support Tools. Successful attacks
        of
        this vulnerability can result in unauthorized creation, deletion or
        modification access to critical data or all OSS Support Tools
        accessible data.
         Affects:
         o OSS Support Tools 2.12.45
         o OSS Support Tools 24.1.24.1.16
         o OSS Support Tools 24.1.24.1.16" [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 2024
            https://www.oracle.com/security-alerts/cpuapr2024.html

        [2] Text Form of Oracle Critical Patch Update - April 2024 Risk
            Matrices
            https://www.oracle.com/security-alerts/cpuapr2024verbose.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)
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                On call after hours for member emergencies only.
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