Login
Newsletter
Werbung

Sicherheit: Zwei Probleme in Linux
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in Linux
ID: USN-3542-1
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 LTS
Datum: Di, 23. Januar 2018, 07:08
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5753
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715
Applikationen: Linux

Originalnachricht


--===============8175411192023266915==
Content-Type: multipart/signed; micalg=pgp-sha512;
protocol="application/pgp-signature";
boundary="aqudfhjpz3jw57fh"
Content-Disposition: inline


--aqudfhjpz3jw57fh
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

==========================================================================
Ubuntu Security Notice USN-3542-1
January 23, 2018

linux vulnerabilities
==========================================================================

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were addressed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

Jann Horn discovered that microprocessors utilizing speculative
execution and branch prediction may allow unauthorized memory reads via
sidechannel attacks. This flaw is known as Spectre. A local attacker
could use this to expose sensitive information, including kernel
memory. This update provides mitigations for the i386 (CVE-2017-5753
only) and amd64 architectures.

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-141-generic 3.13.0-141.190
linux-image-3.13.0-141-lowlatency 3.13.0-141.190
linux-image-generic 3.13.0.141.151
linux-image-lowlatency 3.13.0.141.151

Please note that fully mitigating CVE-2017-5715 (Spectre Variant 2)
requires corresponding processor microcode/firmware updates or,
in virtual environments, hypervisor updates. On i386 and amd64
architectures, the IBRS and IBPB features are required to enable the
kernel mitigations. Ubuntu is working with Intel and AMD to provide
future microcode updates that implement IBRS and IBPB as they are made
available. Ubuntu users with a processor from a different vendor should
contact the vendor to identify necessary firmware updates. Ubuntu
will provide corresponding QEMU updates in the future for users of
self-hosted virtual environments in coordination with upstream QEMU.
Ubuntu users in cloud environments should contact the cloud provider
to confirm that the hypervisor has been updated to expose the new
CPU features to virtual machines.

After a standard system update you need to reboot your computer to
apply the necessary changes.

References:
https://www.ubuntu.com/usn/usn-3542-1
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown
CVE-2017-5715, CVE-2017-5753

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-141.190


--aqudfhjpz3jw57fh
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=gJOQ
-----END PGP SIGNATURE-----

--aqudfhjpz3jw57fh--


--===============8175411192023266915==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

--
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce
Pro-Linux
Traut euch!
Neue Nachrichten
Werbung