The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Linux kernel: information disclosure via net_hash_mix

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via net_hash_mix() of the Linux kernel, in order to obtain sensitive information.
Impacted systems: Debian, BIG-IP Hardware, TMOS, Linux, openSUSE Leap, RHEL, RSA Authentication Manager, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 08/07/2019.
Références of this alert: CERTFR-2019-AVI-330, CERTFR-2019-AVI-337, CERTFR-2019-AVI-392, CERTFR-2019-AVI-419, CERTFR-2019-AVI-441, CERTFR-2019-AVI-458, CERTFR-2020-AVI-180, CERTFR-2020-AVI-243, CERTFR-2020-AVI-253, CERTFR-2020-AVI-369, CVE-2019-10639, DLA-1862-1, DLA-1885-1, DSA-2019-133, DSA-4497-1, K32804955, openSUSE-SU-2019:1716-1, openSUSE-SU-2019:1757-1, RHSA-2020:1016-01, RHSA-2020:1070-01, RHSA-2020:1567-01, RHSA-2020:1769-01, RHSA-2020:1966-01, RHSA-2020:2522-01, SUSE-SU-2019:1823-1, SUSE-SU-2019:1823-2, SUSE-SU-2019:1851-1, SUSE-SU-2019:1852-1, SUSE-SU-2019:1854-1, SUSE-SU-2019:1855-1, SUSE-SU-2019:2430-1, SUSE-SU-2019:2450-1, USN-4115-1, USN-4115-2, USN-4118-1, VIGILANCE-VUL-29705.

Description of the vulnerability 

An attacker can bypass access restrictions to data via net_hash_mix() of the Linux kernel, in order to obtain sensitive information.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer threat announce impacts software or systems such as Debian, BIG-IP Hardware, TMOS, Linux, openSUSE Leap, RHEL, RSA Authentication Manager, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

The trust level is of type confirmed by the editor, with an origin of internet server.

An attacker with a expert ability can exploit this cybersecurity alert.

Solutions for this threat 

Linux kernel: version 5.0.8.
The version 5.0.8 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.35.
The version 4.19.35 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.112.
The version 4.14.112 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.169.
The version 4.9.169 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.70.
The version 3.16.70 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

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

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.168-1+deb9u5~deb8u1

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.70-1

Debian 9/10: new linux packages.
New packages are available:
  Debian 9: linux 4.9.168-1+deb9u5
  Debian 10: linux 4.19.37-5+deb10u2

F5 BIG-IP: solution for Linux.
The solution is indicated in information sources.

openSUSE Leap 15.0: new kernel packages.
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.67.1

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel debug-4.12.14-lp151.28.10.1

RHEL 7.7: new kernel packages.
New packages are available:
  RHEL 7.0-7.8: kernel 3.10.0-1062.26.1.el7

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

RHEL 8: new kernel packages.
New packages are available:
  RHEL 8.0-8.1: kernel 4.18.0-193.el8

RHEL 8: new kernel-rt packages.
New packages are available:
  RHEL 8.0-8.1: kernel-rt 4.18.0-193.rt13.51.el8

RSA Authentication Manager: version 8.4 Patch 6.
The version 8.4 Patch 6 is fixed:
  https://www.dell.com/support

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.117.1

SUSE LE 12 SP3: new kernel packages.
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.100.1

SUSE LE 12 SP4: new kernel packages (16/07/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.24.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.3.1

SUSE LE 15 RTM: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.27.1

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.10.1

SUSE LE 15 SP1: new kernel-source-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-source-rt 4.12.14-14.8.1

Ubuntu 16/18: new linux-image-aws packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-aws 4.15.0.1047.47
  Ubuntu 18.04 LTS: linux-image-aws 4.15.0.1047.46

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.62.82
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.62.64
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a software vulnerability database. The Vigil@nce computer vulnerability tracking service alerts your teams of vulnerabilities or threats impacting your information system.