--===============4840840324660691545== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="xFAlB6MquX7/xpZD" Content-Disposition: inline
--xFAlB6MquX7/xpZD Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inlin Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-3977-3 June 20, 2019
intel-microcode update ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04 - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM
Summary:
The system could be made to expose sensitive information.
Software Description: - intel-microcode: Processor microcode for Intel CPUs
Details:
USN-3977-1 and USN-3977-2 provided mitigations for Microarchitectural Data Sampling (MDS) vulnerabilities in Intel Microcode for a large number of Intel processor families. This update provides the corresponding updated microcode mitigations for the Intel Sandy Bridge processor family
Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss discovered that memory previously stored in microarchitectural fill buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information. (CVE-2018-12130)
Brandon Falk, Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and Cristiano Giuffrida discovered that memory previously stored in microarchitectural load ports of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information. (CVE-2018-12127)
Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Marina Minkin, Daniel Moghimi, Moritz Lipp, Michael Schwarz, Jo Van Bulck, Daniel Genkin, Daniel Gruss, Berk Sunar, Frank Piessens, and Yuval Yarom discovered that memory previously stored in microarchitectural store buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information. (CVE-2018-12126)
Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Volodrmyr Pikhur, Moritz Lipp, Michael Schwarz, Daniel Gruss, Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and Cristiano Giuffrida discovered that uncacheable memory previously stored in microarchitectural buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information. (CVE-2019-11091)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 19.04: intel-microcode 3.20190618.0ubuntu0.19.04.1
Ubuntu 18.10: intel-microcode 3.20190618.0ubuntu0.18.10.1
Ubuntu 18.04 LTS: intel-microcode 3.20190618.0ubuntu0.18.04.1
Ubuntu 16.04 LTS: intel-microcode 3.20190618.0ubuntu0.16.04.1
Ubuntu 14.04 ESM: intel-microcode 3.20190618.0ubuntu0.14.04.1
After a standard system update you need to reboot your computer to make all the necessary changes.
References: https://usn.ubuntu.com/3977-3 https://usn.ubuntu.com/3977-1 CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/MDS
Package Information: https://launchpad.net/ubuntu/+source/intel-microcode/3.20190618.0ubuntu0.19.04.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20190618.0ubuntu0.18.10.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20190618.0ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20190618.0ubuntu0.16.04.1
--xFAlB6MquX7/xpZD Content-Type: application/pgp-signature; name="signature.asc"
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEpgY7tWAjCaQ8jrvULwmejQBegfQFAl0L5QYACgkQLwmejQBe gfSzSw//SyZiODqqONwuG9pD5M5BEb5momVUfRqGmVtG1ll2cqZ1bjRkdA4i6gs8 DSBCdL79s1v/qQW5mjCCEt7eKg8xc1ySSb0CIGCymTtlpMKLnSljDqjeti7l2Isf aLNqJIWwHlPls2Ym5+5R3duY0x4xua9yDnk0Ls4JNgcDv91ZRKmqiqYP9FPIK5mQ FITSeDTF7+JEGQbolnNCaSlN+OoKtayw/BdjyW43NcRMxn9oZV/fcUcW2w076au5 coNyMmKMnnUoPjTZHbyKu20B64q8+ysN4niJOcpuOCC5TsTDitF0OdTCkpey9f6w oMlvLNO95+a4jFQDWCKoLbQkn2/wkOAVg9cJCekx0KcfZg4Op4ka5WArB9KbhZ/Q VkbkWF5nZSGdGgmoMFmg3Aj1Km8oYobhN8fv4DVu7bHyGseM/nOGgiqe9SP+YMQg QiFqxI1zLtl+OKc1JI6vxpjQR6NR8EbOacXSF9pgpLofVRH0G8p7eCXPGOpJkwMI qy0/UPrtMmSnagqZs5rDBu4Ox5sQP+0NfTrc+6QWmGoTetlKY6gLR6pMCxP+vsPX h/K7sYWKRfk2v3IgM3XnVKI9CvYES4IwWdg6c0bVIB9xJYXYXA811jZjGoEwOUGX 4gB78MiwqDZilaQCaJpQcQEykEhcqtlN+dSa/Ly4US7WA+wub8Q= =8KWb -----END PGP SIGNATURE-----
--xFAlB6MquX7/xpZD--
--===============4840840324660691545== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline
LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5 LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj dXJpdHktYW5ub3VuY2UK
--===============4840840324660691545==--
|