drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux (Aktualisierung)
Name: |
Mehrere Probleme in Linux (Aktualisierung) |
|
ID: |
USN-3777-2 |
|
Distribution: |
Ubuntu |
|
Plattformen: |
Ubuntu 16.04 LTS |
|
Datum: |
Di, 2. Oktober 2018, 07:37 |
|
Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15594
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6554
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10853
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15572
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14633
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6555
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17182 |
|
Applikationen: |
Linux |
|
Update von: |
Mehrere Probleme in Linux |
|
Originalnachricht |
--===============1537413502199844191== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="t4apE7yKrX2dGgJC" Content-Disposition: inline
--t4apE7yKrX2dGgJC Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inlin Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-3777-2 October 01, 2018
linux-hwe, linux-gcp vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel
Details:
USN-3777-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS.
Jann Horn discovered that the vmacache subsystem did not properly handle sequence number overflows, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2018-17182)
It was discovered that the paravirtualization implementation in the Linux kernel did not properly handle some indirect calls, reducing the effectiveness of Spectre v2 mitigations for paravirtual guests. A local attacker could use this to expose sensitive information. (CVE-2018-15594)
It was discovered that microprocessors utilizing speculative execution and prediction of return addresses via Return Stack Buffer (RSB) may allow unauthorized memory reads via sidechannel attacks. An attacker could use this to expose sensitive information. (CVE-2018-15572)
Andy Lutomirski and Mika Penttilä discovered that the KVM implementation in the Linux kernel did not properly check privilege levels when emulating some instructions. An unprivileged attacker in a guest VM could use this to escalate privileges within the guest. (CVE-2018-10853)
It was discovered that a stack-based buffer overflow existed in the iSCSI target implementation of the Linux kernel. A remote attacker could use this to cause a denial of service (system crash). (CVE-2018-14633)
It was discovered that a memory leak existed in the IRDA subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2018-6554)
It was discovered that a use-after-free vulnerability existed in the IRDA implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-6555)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 LTS: linux-image-4.15.0-1021-gcp 4.15.0-1021.22~16.04.1 linux-image-4.15.0-36-generic 4.15.0-36.39~16.04.1 linux-image-4.15.0-36-generic-lpae 4.15.0-36.39~16.04.1 linux-image-4.15.0-36-lowlatency 4.15.0-36.39~16.04.1 linux-image-gcp 4.15.0.1021.35 linux-image-generic-hwe-16.04 4.15.0.36.59 linux-image-generic-lpae-hwe-16.04 4.15.0.36.59 linux-image-gke 4.15.0.1021.35 linux-image-lowlatency-hwe-16.04 4.15.0.36.59 linux-image-oem 4.15.0.36.59
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
References: https://usn.ubuntu.com/usn/usn-3777-2 https://usn.ubuntu.com/usn/usn-3777-1 CVE-2018-10853, CVE-2018-14633, CVE-2018-15572, CVE-2018-15594, CVE-2018-17182, CVE-2018-6554, CVE-2018-6555
Package Information: https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1021.22~16.04.1 https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-36.39~16.04.1
--t4apE7yKrX2dGgJC Content-Type: application/pgp-signature; name="signature.asc"
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEpgY7tWAjCaQ8jrvULwmejQBegfQFAluydn0ACgkQLwmejQBe gfT3Yw//byAoV8rwbcCzXMMYAyCoepKVz4vJ5zkMo2SV1Yvh1PBoPY59RPj8o/iv hN1ueNwdAiIwDvKRDBacYrHYyryxUoeyKvqKVKEeOHdWwPOJXo/cTdrBktBuHjWN wxp2OUkfqByKFV75f4DYK11JLCeDLpU70zuxbb1XExgFvpsjVsgHggfkYgJ4bPP6 wVFFyByYqVXQLvMOAoHjW1MFAzju/vRlF/7XjH2vYLwg2dUvFuAXsw5xXxNBCrgt j8wN+uKLqcaC3GMwlTg38sBKfAmiRoCAWH5Z/SyRTGlL55rdwVTlKo7S8FhpCaPp K/g7DgU8ZsRG9+htDE3WdEIhdQBrVpUk/l7xiwGc4sdV9rbgc6Ir/wAKDlqsZT7r +WggJFU9GqL+1EkEevsSprSdLAPK+U4mbHjgHRK3jJ2sBWQbqfw74WfeMlpC++zp LcdkDIftYzIwvV8vq0IH1aBZaQ+mD6SmMTOOq2VO9/BQwQ3I+F+EjObJjoWAMZlW /+NXfIvWstQG/q11rWCGUaH9AsFi1jV5W9BjBxMP0PcKcKLmRmaVwXRwXVKJsIul YO32SZ5NkWEVhKA18wwl/ceDFRs362M7LX9FybgaqlQyAxHkGgDy4gD5Ne2ThBAK dim11pZ4Z699nLfhq3mWC0o4i/48JRe9d+O7nWrBRdJAUrbgX2A= =Yn4i -----END PGP SIGNATURE-----
--t4apE7yKrX2dGgJC--
--===============1537413502199844191== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline
LS0gCnVidW50dS1zZWN1cml0eS1hbm5vdW5jZSBtYWlsaW5nIGxpc3QKdWJ1bnR1LXNlY3VyaXR5 LWFubm91bmNlQGxpc3RzLnVidW50dS5jb20KTW9kaWZ5IHNldHRpbmdzIG9yIHVuc3Vic2NyaWJl IGF0OiBodHRwczovL2xpc3RzLnVidW50dS5jb20vbWFpbG1hbi9saXN0aW5mby91YnVudHUtc2Vj dXJpdHktYW5ub3VuY2UK
--===============1537413502199844191==--
|
|
|
|