ASB-2018.0039 - [Win][UNIX/Linux] Mozilla Firefox: Execute arbitrary code/commands - Remote with user interaction 2018-01-30

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                         AUSCERT Security Bulletin

                               ASB-2018.0039
               Mozilla Foundation Security Advisory 2018-05
                              30 January 2018

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

Product:              Mozilla Firefox
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2018-5124  
Member content until: Thursday, March  1 2018

OVERVIEW

        A critical vulnerability has been identified in Mozilla Firefox prior
        to version 58.0.1. [1]


IMPACT

        Mozilla have provided the following details regarding the 
        vulnerability:
        
        "Arbitrary code execution through unsanitized browser UI
        
        ANNOUNCED 	January 29, 2018
        REPORTER 	Johann Hofmann
        IMPACT 		CRITICAL
        PRODUCTS 	Firefox
        FIXED IN 	Firefox 58.0.1
        
        Description
        
        Mozilla developer Johann Hofmann reported that unsanitized output in
        the browser UI can lead to arbitrary code execution.
        
        This issue did not affect Firefox for Android or Firefox 52 ESR."


MITIGATION

        Users are advised to update to the latest versions to address these 
        issues. [1]


REFERENCES

        [1] Mozilla Foundation Security Advisory 2018-05
            https://www.mozilla.org/en-US/security/advisories/mfsa2018-05/

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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