firefox: Access Privileged Data -- Remote with User Interaction

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0083
             Firefox on Ubuntu patched for Spectre & Meltdown
                              8 January 2018

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

Product:           firefox
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Access Privileged Data -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-5754 CVE-2017-5753 CVE-2017-5715

Reference:         ASB-2018.0002.4
                   ESB-2018.0080
                   ESB-2018.0079
                   ESB-2018.0046
                   ESB-2018.0044
                   ESB-2018.0042

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3516-1

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Ubuntu Security Notice USN-3516-1

5th January, 2018
firefox vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

    Ubuntu 17.10
    Ubuntu 17.04
    Ubuntu 16.04 LTS
    Ubuntu 14.04 LTS

Summary

Firefox could be made to expose sensitive information.
Software description

    firefox - Mozilla Open Source web browser

Details

It was discovered that speculative execution performed by modern CPUs
could leak information through a timing side-channel attack, and that
this could be exploited in web browser JavaScript engines. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit this to obtain sensitive information from other
domains, bypassing same-origin restrictions. (CVE-2017-5715,
CVE-2017-5753, CVE-2017-5754).
Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 17.10:
    firefox 57.0.4+build1-0ubuntu0.17.10.1 
Ubuntu 17.04:
    firefox 57.0.4+build1-0ubuntu0.17.04.1 
Ubuntu 16.04 LTS:
    firefox 57.0.4+build1-0ubuntu0.16.04.1 
Ubuntu 14.04 LTS:
    firefox 57.0.4+build1-0ubuntu0.14.04.1 

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart Firefox to make
all the necessary changes.
References

CVE-2017-5715, CVE-2017-5753, CVE-2017-5754

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