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                         AUSCERT Security Bulletin

                               ASB-2016.0113
          A vulnerability has been identified in Mozilla Firefox
                             30 November 2016

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

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

Product:              Mozilla Firefox
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
                      Android
Impact/Access:        Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                      Provide Misleading Information  -- Remote/Unauthenticated
Resolution:           Patch/Upgrade
CVE Names:            CVE-2016-9078  
Member content until: Friday, December 30 2016

OVERVIEW

        A vulnerability has been identified in Mozilla Firefox prior to 
        version 50.0.1.


IMPACT

        The vendor has provided the following details regarding the vulnerability:
        
        CVE-2016-9078: "Redirection from an HTTP connection to a data: URL 
        assigns the referring site's origin to the data: URL in some 
        circumstances. This can result in same-origin violations against a 
        domain if it loads resources from malicious sites. Cross-origin 
        setting of cookies has been demonstrated without the ability to read
        them.
        
        Note: This issue only affects Firefox 49 and 50." [1]


MITIGATION

        The vendor advises upgrading to the latest version addresses this 
        issue. [1]


REFERENCES

        [1] Mozilla Foundation Security Advisory 2016-91
            https://www.mozilla.org/en-US/security/advisories/mfsa2016-91/

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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