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Vulnerability of Linux kernel: information disclosure via ASLR Bypass

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via ASLR Bypass of the Linux kernel, in order to obtain sensitive information.
Vulnerable systems: Debian, Linux, openSUSE Leap, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 1/4.
Number of vulnerabilities in this bulletin: 2.
Creation date: 04/04/2019.
Références of this weakness: CERTFR-2019-AVI-244, CERTFR-2019-AVI-254, CERTFR-2020-AVI-180, CVE-2019-11190, CVE-2019-11191, DLA-1799-1, DLA-1799-2, openSUSE-SU-2019:1570-1, RHSA-2020:1016-01, RHSA-2020:1070-01, SSB-439005, SUSE-SU-2019:14089-1, SUSE-SU-2019:1527-1, SUSE-SU-2019:1532-1, SUSE-SU-2019:1533-1, SUSE-SU-2019:1534-1, SUSE-SU-2019:1692-1, USN-4006-1, USN-4006-2, USN-4007-1, USN-4007-2, USN-4008-1, USN-4008-2, USN-4008-3, VIGILANCE-VUL-28940.

Description of the vulnerability 

An attacker can bypass access restrictions to data via ASLR Bypass of the Linux kernel, in order to obtain sensitive information.
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This computer threat impacts software or systems such as Debian, Linux, openSUSE Leap, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is low.

The trust level is of type confirmed by the editor, with an origin of user shell.

This bulletin is about 2 vulnerabilities.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this cybersecurity weakness.

Solutions for this threat 

Linux kernel: version 4.4.179.
The version 4.4.179 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.4.179.tar.xz

Linux kernel: version 3.18.139.
The version 3.18.139 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.18.139.tar.xz

Linux kernel: version 3.16.66.
The version 3.16.66 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.16.66.tar.xz

Linux kernel: patch for ASLR Bypass.
A patch is indicated in information sources.

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.68-1

openSUSE Leap 42.3: new kernel packages.
New packages are available:
  openSUSE Leap 42.3: kernel 4.4.180-102.1

RHEL 7: new kernel packages (01/04/2020).
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-1127.el7

RHEL 7: new kernel-rt packages (01/04/2020).
New packages are available:
  RHEL 7.0-7.7: kernel-rt 3.10.0-1127.rt56.1093.el7

SIMATIC S7-1500 CPU 1518: workaround for GNU/Linux Vulnerabilities.
A workaround is indicated in the information source.

SUSE LE 11 SP4: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.95.2

SUSE LE 12 RTM: new kernel packages.
New packages are available:
  SUSE LE 12 RTM: kernel 3.12.61-52.154.1

SUSE LE 12 SP1: new kernel packages (18/06/2019).
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.115.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.114.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.97.1

Ubuntu 16.04: new apparmor-profiles packages.
New packages are available:
  Ubuntu 16.04 LTS: apparmor-profiles 2.10.95-0ubuntu2.11

Ubuntu 16.04: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.150.158
  Ubuntu 14.04 ESM: linux-image-generic-lts-xenial 4.4.0.150.132

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.51.72
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.51.53

Ubuntu: new linux-image-4.18.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 4.18.0.21.71
  Ubuntu 18.10: linux-image-generic 4.18.0.21.22

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
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