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                         AUSCERT Security Bulletin

                               ASB-2018.0060
               Mozilla Foundation Security Advisory 2018-08
                               19 March 2018

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

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

Product:              Mozilla Firefox, Firefox ESR
Operating System:     Windows
                      UNIX variants (UNIX, Linux, OSX)
                      Mobile Device
Impact/Access:        Execute Arbitrary Code/Commands -- Remote with User Interaction
                      Denial of Service               -- Remote with User Interaction
Resolution:           Patch/Upgrade
CVE Names:            CVE-2018-5147 CVE-2018-5146 
Member content until: Wednesday, April 18 2018

OVERVIEW

        Mozilla has released versions Firefox 59.0.1 and Firefox ESR 52.7.2 of 
        the Firefox web browser to correct multiple critical security 
        vulnerabilities. [1]


IMPACT

        Mozilla have provided the following details regarding the 
        vulnerability:
        
        "CVE-2018-5146: Out of bounds memory write in libvorbis
        
        Reporter
            Richard Zhu via Trend Micro's Zero Day Initiative
        Impact
            critical
        
        Description
        
        An out of bounds memory write while processing Vorbis audio data was 
        reported through the Pwn2Own contest.
        
        References
        
            Bug 1446062
        
        #CVE-2018-5147: Out of bounds memory write in libtremor
        
        Reporter
            Huzaifa Sidhpurwala
        Impact
            critical
        
        Description
        
        The libtremor library has the same flaw as CVE-2018-5146. This library
        is used by Firefox in place of libvorbis on Android and ARM platforms."
        [1]


MITIGATION

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


REFERENCES

        [1] Mozilla Foundation Security Advisory 2018-08
            https://www.mozilla.org/en-US/security/advisories/mfsa2018-08/

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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