You are here
Home > Preporuke > Sigurnosni nedostaci jezgre operacijskog sustava

Sigurnosni nedostaci jezgre operacijskog sustava

  • Detalji os-a: WN7
  • Važnost: IMP
  • Operativni sustavi: L
  • Kategorije: LUB

==========================================================================
Ubuntu Security Notice USN-3265-1
April 25, 2017

linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities
==========================================================================

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

– Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
– linux: Linux kernel
– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
– linux-gke: Linux kernel for Google Container Engine (GKE) systems
– linux-raspi2: Linux kernel for Raspberry Pi 2
– linux-snapdragon: Linux kernel for Snapdragon Processors

Details:

It was discovered that a use-after-free flaw existed in the filesystem
encryption subsystem in the Linux kernel. A local attacker could use this
to cause a denial of service (system crash). (CVE-2017-7374)

Andrey Konovalov discovered an out-of-bounds access in the IPv6 Generic
Routing Encapsulation (GRE) tunneling implementation in the Linux kernel.
An attacker could use this to possibly expose sensitive information.
(CVE-2017-5897)

Andrey Konovalov discovered that the IPv4 implementation in the Linux
kernel did not properly handle invalid IP options in some situations. An
attacker could use this to cause a denial of service or possibly execute
arbitrary code. (CVE-2017-5970)

Gareth Evans discovered that the shm IPC subsystem in the Linux kernel did
not properly restrict mapping page zero. A local privileged attacker could
use this to execute arbitrary code. (CVE-2017-5669)

Alexander Popov discovered that a race condition existed in the Stream
Control Transmission Protocol (SCTP) implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2017-5986)

Dmitry Vyukov discovered that the Linux kernel did not properly handle TCP
packets with the URG flag. A remote attacker could use this to cause a
denial of service. (CVE-2017-6214)

Andrey Konovalov discovered that the LLC subsytem in the Linux kernel did
not properly set up a destructor in certain situations. A local attacker
could use this to cause a denial of service (system crash). (CVE-2017-6345)

It was discovered that a race condition existed in the AF_PACKET handling
code in the Linux kernel. A local attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2017-6346)

Andrey Konovalov discovered that the IP layer in the Linux kernel made
improper assumptions about internal data layout when performing checksums.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2017-6347)

Dmitry Vyukov discovered race conditions in the Infrared (IrDA) subsystem
in the Linux kernel. A local attacker could use this to cause a denial of
service (deadlock). (CVE-2017-6348)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-1012-gke 4.4.0-1012.12
linux-image-4.4.0-1016-aws 4.4.0-1016.25
linux-image-4.4.0-1054-raspi2 4.4.0-1054.61
linux-image-4.4.0-1057-snapdragon 4.4.0-1057.61
linux-image-4.4.0-75-generic 4.4.0-75.96
linux-image-4.4.0-75-generic-lpae 4.4.0-75.96
linux-image-4.4.0-75-lowlatency 4.4.0-75.96
linux-image-4.4.0-75-powerpc-e500mc 4.4.0-75.96
linux-image-4.4.0-75-powerpc-smp 4.4.0-75.96
linux-image-4.4.0-75-powerpc64-smp 4.4.0-75.96
linux-image-aws 4.4.0.1016.19
linux-image-generic 4.4.0.75.81
linux-image-generic-lpae 4.4.0.75.81
linux-image-gke 4.4.0.1012.14
linux-image-lowlatency 4.4.0.75.81
linux-image-powerpc-e500mc 4.4.0.75.81
linux-image-powerpc-smp 4.4.0.75.81
linux-image-powerpc64-smp 4.4.0.75.81
linux-image-raspi2 4.4.0.1054.55
linux-image-snapdragon 4.4.0.1057.50

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:
http://www.ubuntu.com/usn/usn-3265-1
CVE-2017-5669, CVE-2017-5897, CVE-2017-5970, CVE-2017-5986,
CVE-2017-6214, CVE-2017-6345, CVE-2017-6346, CVE-2017-6347,
CVE-2017-6348, CVE-2017-7374

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-75.96
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1016.25
https://launchpad.net/ubuntu/+source/linux-gke/4.4.0-1012.12
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1054.61
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1057.61

—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1
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=NRqt
—–END PGP SIGNATURE—–

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

==========================================================================
Ubuntu Security Notice USN-3265-2
April 25, 2017

linux-lts-xenial vulnerabilities
==========================================================================

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

– Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
– linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3265-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

It was discovered that a use-after-free flaw existed in the filesystem
encryption subsystem in the Linux kernel. A local attacker could use this
to cause a denial of service (system crash). (CVE-2017-7374)

Andrey Konovalov discovered an out-of-bounds access in the IPv6 Generic
Routing Encapsulation (GRE) tunneling implementation in the Linux kernel.
An attacker could use this to possibly expose sensitive information.
(CVE-2017-5897)

Andrey Konovalov discovered that the IPv4 implementation in the Linux
kernel did not properly handle invalid IP options in some situations. An
attacker could use this to cause a denial of service or possibly execute
arbitrary code. (CVE-2017-5970)

Gareth Evans discovered that the shm IPC subsystem in the Linux kernel did
not properly restrict mapping page zero. A local privileged attacker could
use this to execute arbitrary code. (CVE-2017-5669)

Alexander Popov discovered that a race condition existed in the Stream
Control Transmission Protocol (SCTP) implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2017-5986)

Dmitry Vyukov discovered that the Linux kernel did not properly handle TCP
packets with the URG flag. A remote attacker could use this to cause a
denial of service. (CVE-2017-6214)

Andrey Konovalov discovered that the LLC subsytem in the Linux kernel did
not properly set up a destructor in certain situations. A local attacker
could use this to cause a denial of service (system crash). (CVE-2017-6345)

It was discovered that a race condition existed in the AF_PACKET handling
code in the Linux kernel. A local attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2017-6346)

Andrey Konovalov discovered that the IP layer in the Linux kernel made
improper assumptions about internal data layout when performing checksums.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2017-6347)

Dmitry Vyukov discovered race conditions in the Infrared (IrDA) subsystem
in the Linux kernel. A local attacker could use this to cause a denial of
service (deadlock). (CVE-2017-6348)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-4.4.0-75-generic 4.4.0-75.96~14.04.1
linux-image-4.4.0-75-generic-lpae 4.4.0-75.96~14.04.1
linux-image-4.4.0-75-lowlatency 4.4.0-75.96~14.04.1
linux-image-4.4.0-75-powerpc-e500mc 4.4.0-75.96~14.04.1
linux-image-4.4.0-75-powerpc-smp 4.4.0-75.96~14.04.1
linux-image-4.4.0-75-powerpc64-smp 4.4.0-75.96~14.04.1
linux-image-generic-lpae-lts-xenial 4.4.0.75.62
linux-image-generic-lts-xenial 4.4.0.75.62
linux-image-lowlatency-lts-xenial 4.4.0.75.62
linux-image-powerpc-e500mc-lts-xenial 4.4.0.75.62
linux-image-powerpc-smp-lts-xenial 4.4.0.75.62
linux-image-powerpc64-smp-lts-xenial 4.4.0.75.62

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:
http://www.ubuntu.com/usn/usn-3265-2
http://www.ubuntu.com/usn/usn-3265-1
CVE-2017-5669, CVE-2017-5897, CVE-2017-5970, CVE-2017-5986,
CVE-2017-6214, CVE-2017-6345, CVE-2017-6346, CVE-2017-6347,
CVE-2017-6348, CVE-2017-7374

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-75.96~14.04.1

—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1
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=dCwV
—–END PGP SIGNATURE—–

AutorDanijel Kozinovic
Cert idNCERT-REF-2017-04-0010-ADV
CveCERT-CVE-DUMMY
ID izvornikaCERT-ORIGID-DUMMY
ProizvodCERT-DUMMY-PRODUCT
Izvorhttp://www.adobe.com/
Top
More in Preporuke
Sigurnosni nedostatak jezgre operacijskog sustava

Otkriven je sigurnosni nedostatak u radu programske jezgre operacijskog sustava Ubuntu 14.04 LTS. Otkriveni nedostatak potencijalnim lokalnim napadačima omogućuje izvođenje...

Close