ESB-2018.2184 - [Win][UNIX/Linux][Debian] intel-microcode: Access privileged data - Existing account 2018-07-30

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2184
               [DLA 1446-1] intel-microcode security update
                               30 July 2018

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

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

Product:           intel-microcode
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
                   Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Privileged Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-3640 CVE-2018-3639 

Reference:         ASB-2018.0121
                   ESB-2018.2168
                   ESB-2018.2142
                   ESB-2018.2141
                   ESB-2018.2107
                   ESB-2018.2097

Original Bulletin: 
   https://security-tracker.debian.org/tracker/DLA-1446-1

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running intel-microcode check for an updated version of the software
         for their operating system.

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Package        : intel-microcode
Version        : 3.20180703.2~deb8u1
CVE ID         : CVE-2018-3639 CVE-2018-3640

Security researchers identified two software analysis methods that, if
used for malicious purposes, have the potential to improperly gather
sensitive data from multiple types of computing devices with different
vendors processors and operating systems.

This update requires an update to the intel-microcode package, which
is non-free. Users who have already installed the version from
jessie-backports-sloppy do not need to upgrade.

CVE-2018-3639 - Speculative Store Bypass (SSB) - also known as Variant 4

    Systems with microprocessors utilizing speculative execution and
    speculative execution of memory reads before the addresses of all
    prior memory writes are known may allow unauthorized disclosure of
    information to an attacker with local user access via a side-channel
    analysis.


CVE-2018-3640 - Rogue System Register Read (RSRE) - also known as
                Variant 3a

    Systems with microprocessors utilizing speculative execution and
    that perform speculative reads of system registers may allow
    unauthorized disclosure of system parameters to an attacker with
    local user access via a side-channel analysis.

For Debian 8 "Jessie", these problems have been fixed in version
3.20180703.2~deb8u1.

We recommend that you upgrade your intel-microcode packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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