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Vulnerability of GNOME Glib: integer overflow via g_bytes_new

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via g_bytes_new() of GNOME Glib, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Fedora, openSUSE Leap, Solaris, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 09/03/2021.
Références of this bulletin: CVE-2021-27219, FEDORA-2021-7c71cda8da, openSUSE-SU-2021:0406-1, RHSA-2021:2147-01, RHSA-2021:2170-01, RHSA-2021:2171-01, RHSA-2021:2172-01, RHSA-2021:2173-01, RHSA-2021:2174-01, RHSA-2021:2175-01, RHSA-2021:2203-01, RHSA-2021:2204-01, SSB-439005, SUSE-SU-2021:0778-1, SUSE-SU-2021:0801-1, SUSE-SU-2021:0890-1, USN-4759-1, VIGILANCE-VUL-34776.

Description of the vulnerability 

An attacker can trigger an integer overflow via g_bytes_new() of GNOME Glib, in order to trigger a denial of service, and possibly to run code.
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This weakness impacts software or systems such as Fedora, openSUSE Leap, Solaris, RHEL, SIMATIC, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

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

An attacker with a expert ability can exploit this threat bulletin.

Solutions for this threat 

Fedora 33: new mingw-glib2 packages.
New packages are available:
  Fedora 33: mingw-glib2 2.66.7-1.fc33

openSUSE Leap 15.2: new glib2 packages.
New packages are available:
  openSUSE Leap 15.2: glib2 2.62.6-lp152.2.6.1

Oracle Solaris: patch for third party software of April 2021 v1.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7.2: new glib2 packages.
New packages are available:
  RHEL 7.2: glib2 2.42.2-6.el7_2

RHEL 7.3: new glib2 packages.
New packages are available:
  RHEL 7.3: glib2 2.46.2-5.el7_3

RHEL 7.4: new glib2 packages.
New packages are available:
  RHEL 7.4: glib2 2.50.3-4.el7_4

RHEL 7.6: new glib2 packages.
New packages are available:
  RHEL 7.6: glib2 2.56.1-5.el7_6

RHEL 7.7: new glib2 packages.
New packages are available:
  RHEL 7.7: glib2 2.56.1-6.el7_7

RHEL 7.9: new glib2 packages.
New packages are available:
  RHEL 7.9: glib2 2.56.1-9.el7_9

RHEL 8.1: new glib2 packages.
New packages are available:
  RHEL 8.1: glib2 2.56.4-8.el8_1

RHEL 8.2: new glib2 packages.
New packages are available:
  RHEL 8.2: glib2 2.56.4-8.el8_2.1

RHEL 8.4: new glib2 packages.
New packages are available:
  RHEL 8.4: glib2 2.56.4-10.el8_4

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

SUSE LE 12 SP2-5: new glib2 packages.
New packages are available:
  SUSE LE 12 SP2: glib2 2.48.2-12.22.1
  SUSE LE 12 SP3: glib2 2.48.2-12.22.1
  SUSE LE 12 SP4: glib2 2.48.2-12.22.1
  SUSE LE 12 SP5: glib2 2.48.2-12.22.1

SUSE LE 15 RTM-SP1: new glib2 packages.
New packages are available:
  SUSE LE 15 RTM: glib2 2.54.3-4.24.1
  SUSE LE 15 SP1: glib2 2.54.3-4.24.1

SUSE LE 15 SP2-3: new glib2 packages.
New packages are available:
  SUSE LE 15 SP2: glib2 2.62.6-3.6.1
  SUSE LE 15 SP3: glib2 2.62.6-3.6.1

Ubuntu: new libglib2.0-0 packages.
New packages are available:
  Ubuntu 20.10: libglib2.0-0 2.66.1-2ubuntu0.1
  Ubuntu 20.04 LTS: libglib2.0-0 2.64.6-1~ubuntu20.04.2
  Ubuntu 18.04 LTS: libglib2.0-0 2.56.4-0ubuntu0.18.04.7
  Ubuntu 16.04 LTS: libglib2.0-0 2.48.2-0ubuntu4.7
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