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Ubuntu Security Notice USN-3620-1

Ubuntu Security Notice USN-3620-1
Posted Apr 4, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3620-1 - It was discovered that the netlink 802.11 configuration interface in the Linux kernel did not properly validate some attributes passed from userspace. A local attacker with the CAP_NET_ADMIN privilege could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a buffer overflow existed in the ioctl handling code in the ISDN subsystem of the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-11089, CVE-2017-12762, CVE-2017-17448, CVE-2017-17741, CVE-2017-17805, CVE-2017-17807, CVE-2018-1000026, CVE-2018-5332
MD5 | 92be1e1f7075a80057dfacd0385d5b15

Ubuntu Security Notice USN-3620-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3620-1
April 04, 2018

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

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel

Details:

It was discovered that the netlink 802.11 configuration interface in the
Linux kernel did not properly validate some attributes passed from
userspace. A local attacker with the CAP_NET_ADMIN privilege could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-11089)

It was discovered that a buffer overflow existed in the ioctl handling code
in the ISDN subsystem of the Linux kernel. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-12762)

It was discovered that the netfilter component of the Linux did not
properly restrict access to the connection tracking helpers list. A local
attacker could use this to bypass intended access restrictions.
(CVE-2017-17448)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
contained an out-of-bounds read when handling memory-mapped I/O. A local
attacker could use this to expose sensitive information. (CVE-2017-17741)

It was discovered that the Salsa20 encryption algorithm implementations in
the Linux kernel did not properly handle zero-length inputs. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2017-17805)

It was discovered that the keyring implementation in the Linux kernel did
not properly check permissions when a key request was performed on a
task's' default keyring. A local attacker could use this to add keys to
unauthorized keyrings. (CVE-2017-17807)

It was discovered that the Broadcom NetXtremeII ethernet driver in the
Linux kernel did not properly validate Generic Segment Offload (GSO) packet
sizes. An attacker could use this to cause a denial of service (interface
unavailability). (CVE-2018-1000026)

It was discovered that the Reliable Datagram Socket (RDS) implementation in
the Linux kernel contained an out-of-bounds write during RDMA page
allocation. An attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2018-5332)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-144-generic 3.13.0-144.193
linux-image-3.13.0-144-generic-lpae 3.13.0-144.193
linux-image-3.13.0-144-lowlatency 3.13.0-144.193
linux-image-3.13.0-144-powerpc-e500 3.13.0-144.193
linux-image-3.13.0-144-powerpc-e500mc 3.13.0-144.193
linux-image-3.13.0-144-powerpc-smp 3.13.0-144.193
linux-image-3.13.0-144-powerpc64-emb 3.13.0-144.193
linux-image-3.13.0-144-powerpc64-smp 3.13.0-144.193
linux-image-generic 3.13.0.144.154
linux-image-generic-lpae 3.13.0.144.154
linux-image-lowlatency 3.13.0.144.154
linux-image-powerpc-e500 3.13.0.144.154
linux-image-powerpc-e500mc 3.13.0.144.154
linux-image-powerpc-smp 3.13.0.144.154
linux-image-powerpc64-emb 3.13.0.144.154
linux-image-powerpc64-smp 3.13.0.144.154

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-3620-1
CVE-2017-11089, CVE-2017-12762, CVE-2017-17448, CVE-2017-17741,
CVE-2017-17805, CVE-2017-17807, CVE-2018-1000026, CVE-2018-5332

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-144.193

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