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                         AUSCERT Security Bulletin

                               ASB-2017.0027
                [R1] Nessus 6.10.4 Fixes One Vulnerability
                               24 March 2017

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

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

Product:              Tenable Nessus
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
Impact/Access:        Administrator Compromise -- Existing Account
Resolution:           Patch/Upgrade
CVE Names:            CVE-2017-7199  
Member content until: Saturday, April 22 2017

OVERVIEW

        A vulnerability has been identified in Tenable Nessus prior to 
        version 6.10.4[1]


IMPACT

        The vendor has provided the following details regarding the 
        vulnerability:
        
        "Nessus was found to be vulnerable to a local privilege escalation 
        issue due to insecure permissions when running in Agent Mode. This 
        may allow an attacker to gain administrative privileges on the 
        system hosting Nessus.
        
        CVE ID: CVE-2017-7199
        VulnDB ID: 154114
        Tenable Advisory ID: TNS-2017-08
        Credit: Egil Aspevik [NTT Security]
        Risk Factor: High
        CVSSv2 Base / Temporal Score: 7.2 / 6.0
        CVSSv2 Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C)"[1]


MITIGATION

        The vendor has provided the following advice regarding the 
        vulnerability:
        
        "Tenable has released Nessus version 6.10.4 that corresponds to the
        supported operating systems and architectures. To update your Nessus
        installation, follow these steps:
        
        Download the appropriate installation file to the system hosting
        Nessus Professional or Nessus Manager, available at the Tenable 
        Support Portal 
        (https://support.tenable.com/support-center/index.php?x=&mod_id=200)
        
        Stop the Nessus service.
        
        Install according to your operating system procedures.
        
        Restart the Nessus service."[1]


REFERENCES

        [1] [R1] Nessus 6.10.4 Fixes One Vulnerability
            http://www.tenable.com/security/tns-2017-08

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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