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Vulnerability of glibc: information disclosure via LD_PREFER_MAP_32BIT_EXEC Mapping Addresses

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via LD_PREFER_MAP_32BIT_EXEC Mapping Addresses of glibc, in order to obtain sensitive information.
Impacted products: Fedora, RHEL, SIMATIC, SLES.
Severity of this bulletin: 1/4.
Creation date: 21/01/2020.
Références of this threat: CVE-2019-19126, FEDORA-2020-1a3bdfde17, FEDORA-2020-c32e4b271c, RHSA-2020:1828-01, SSB-439005, SUSE-SU-2020:0262-1, VIGILANCE-VUL-31377.

Description of the vulnerability 

An attacker can bypass access restrictions to data via LD_PREFER_MAP_32BIT_EXEC Mapping Addresses of glibc, in order to obtain sensitive information.
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This computer threat announce impacts software or systems such as Fedora, RHEL, SIMATIC, SLES.

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

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

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

Solutions for this threat 

Fedora: new glibc packages.
New packages are available:
  Fedora 30: glibc 2.29-28.fc30
  Fedora 31: glibc 2.30-10.fc31

RHEL 8: new glibc packages.
New packages are available:
  RHEL 8.0-8.1: glibc 2.28-101.el8

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

SUSE LE 15: new glibc packages.
New packages are available:
  SUSE LE 15 RTM: glibc 2.26-13.36.1
  SUSE LE 15 SP1: glibc 2.26-13.36.1

Wind River Linux: version 10.17.41.20.
The version 10.17.41.20 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.18.44.15.
The version 10.18.44.15 is fixed:
  https://support2.windriver.com/
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