PAN-OS: Multiple vulnerabilities

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                         AUSCERT Security Bulletin

                               ASB-2019.0084
             Privilege Escalation in PAN-OS (PAN-SA-2019-0006)
                               25 March 2019

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

Product:              PAN-OS
Operating System:     Network Appliance
Impact/Access:        Root Compromise   -- Existing Account
                      Denial of Service -- Existing Account
Resolution:           Patch/Upgrade
CVE Names:            CVE-2018-14634  
Member content until: Wednesday, April 24 2019
Reference:            ESB-2019.0726
                      ESB-2018.3613
                      ESB-2018.3563
                      ESB-2018.3559
                      ESB-2018.3220

OVERVIEW

        Palo-Alto has advised that PAN-OS is vulnerable to an integer overflow 
        in the linux kernel. [1]


IMPACT

        Palo Alto has provided the following details regarding the issues:
        
        "Summary
        
        Palo Alto Networks is aware of an integer overflow vulnerability in the Linux
        kernel's create_elf_tables() function. (Ref # PAN-105966, CVE-2018-14634)
        
        Severity: Medium
        
        Successful exploitation of this issue may allow an unprivileged local user to
        escalate their privileges on the system. To successfully exploit this
        vulnerability, an attacker would need local user account to access CLI, as well
        as, an unrelated vulnerability allowing the local user to execute arbitrary
        code in a chained attack. This combination would result in the execution of
        malicious code and achieving complete control of the affected system. This
        issue does not affect 32-bit systems as they do not have a large enough address
        space to exploit this flaw.
        
        Products Affected
        
        This only affects 64bit systems with more than 32 GB of available memory. The
        affected platform and versions are PAN-OS 7.1.22 and earlier running on M-500
        and WF-500; PAN-OS 8.0.15 and earlier running on PA-5220, PA-5250, PA-5260,
        M-500 and WF-500; and PAN-OS 8.1.6 and earlier running on PA-5220, PA-5250,
        PA-5260, PA-5280, M-500, M-600 and WF-500. PAN-OS 9.0 is NOT affected." [1]


MITIGATION

        The following updates have been made available to resolve the issue:
        
        "PAN-OS 7.1.23 and later, PAN-OS 8.0.16 and later, and PAN-OS 8.1.7 
        and later." [1] 


REFERENCES

        [1] Privilege Escalation in PAN-OS
            https://securityadvisories.paloaltonetworks.com/Home/Detail/143

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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