Synthesis of the vulnerability 


An attacker can trigger an integer overflow via XIM Client of libX11, in order to trigger a denial of service, and possibly to run code.
Vulnerable software: Debian, Fedora, OpenBSD, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu, libX11.
Severity of this announce: 2/4.
Creation date: 03/08/2020.
Références of this computer vulnerability: CVE-2020-14344, DLA-2312-1, FEDORA-2020-9a0b272cc1, openSUSE-SU-2020:1162-1, openSUSE-SU-2020:1164-1, openSUSE-SU-2020:1182-1, openSUSE-SU-2020:1198-1, SUSE-SU-2020:14445-1, SUSE-SU-2020:14447-1, SUSE-SU-2020:2116-1, SUSE-SU-2020:2117-1, SUSE-SU-2020:2196-1, SUSE-SU-2020:2197-1, USN-4487-1, USN-4487-2, VIGILANCE-VUL-32989.

Description of the vulnerability 


An attacker can trigger an integer overflow via XIM Client of libX11, in order to trigger a denial of service, and possibly to run code.
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This computer weakness note impacts software or systems such as Debian, Fedora, OpenBSD, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu, libX11.

Our Vigil@nce team determined that the severity of this security bulletin is medium.

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 weakness announce.

Solutions for this threat 


libX11: version 1.6.10.
The version 1.6.10 is fixed:
  https://xorg.freedesktop.org/archive/individual/lib/libX11-1.6.10.tar.bz2
Version 1.6.11 fixes a regression error.

libX11: patch for XIM Client.
A patch is available:
  https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/1703b9f3435079d3c6021e1ee2ec34fd4978103d
  https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/1a566c9e00e5f35c1f9e7f3d741a02e5170852b2
  https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/2fcfcc49f3b1be854bb9085993a01d17c62acf60
  https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/388b303c62aa35a245f1704211a023440ad2c488
  https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/0e6561efcfaa0ae7b5c74eac7e064b76d687544e

Debian 9: new libx11 packages.
New packages are available:
  Debian 9: libx11 2:1.6.4-3+deb9u2

Fedora 31: new libX11 packages.
New packages are available:
  Fedora 31: libX11 1.6.12-1.fc31

OpenBSD: patch for libX11.
A patch is available:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/037_ximcp.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/039_ximcp.patch.sig
Or:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/016_ximcp.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/018_ximcp.patch.sig

openSUSE Leap 15.1: new libX11 packages.
New packages are available:
  openSUSE Leap 15.1: libX11 6-1.6.5-lp151.4.6.1

openSUSE Leap 15.2: new libX11 packages.
New packages are available:
  openSUSE Leap 15.2: libX11 6-1.6.5-lp152.5.6.1

openSUSE Leap 15: new libX11 packages.
New packages are available:
  openSUSE Leap 15.1: libX11 6-1.6.5-lp151.4.3.1
  openSUSE Leap 15.2: libX11 6-1.6.5-lp152.5.3.1

SUSE LE 11 SP3-4: new xorg-x11-libX11 packages (05/08/2020).
New packages are available:
  SUSE LE 11 SP3: xorg-x11-libX11 7.4-5.11.72.15.1
  SUSE LE 11 SP4: xorg-x11-libX11 7.4-5.11.72.15.1

SUSE LE 11 SP3-4: new xorg-x11-libX11 packages (11/08/2020).
New packages are available:
  SUSE LE 11 SP3: xorg-x11-libX11 7.4-5.11.72.18.1
  SUSE LE 11 SP4: xorg-x11-libX11 7.4-5.11.72.18.1

SUSE LE 12: new libX11 packages (05/08/2020).
New packages are available:
  SUSE LE 12 SP2: libX11 6-1.6.2-12.8.1
  SUSE LE 12 SP3: libX11 6-1.6.2-12.8.1
  SUSE LE 12 SP4: libX11 6-1.6.2-12.8.1
  SUSE LE 12 SP5: libX11 6-1.6.2-12.8.1

SUSE LE 12: new libX11 packages (11/08/2020).
New packages are available:
  SUSE LE 12 SP2: libX11 1.6.2-12.12.1
  SUSE LE 12 SP3: libX11 1.6.2-12.12.1
  SUSE LE 12 SP4: libX11 1.6.2-12.12.1
  SUSE LE 12 SP5: libX11 1.6.2-12.12.1

SUSE LE 15: new libX11 packages (04/08/2020).
New packages are available:
  SUSE LE 15 RTM: libX11 6-1.6.5-3.6.2
  SUSE LE 15 SP1: libX11 6-1.6.5-3.6.2
  SUSE LE 15 SP2: libX11 6-1.6.5-3.6.2

SUSE LE 15: new libX11 packages (11/08/2020).
New packages are available:
  SUSE LE 15 RTM: libX11 1.6.5-3.9.1
  SUSE LE 15 SP1: libX11 1.6.5-3.9.1
  SUSE LE 15 SP2: libX11 1.6.5-3.9.1

Ubuntu: new libx11-6 packages.
New packages are available:
  Ubuntu 20.04 LTS: libx11-6 2:1.6.9-2ubuntu1.1
  Ubuntu 18.04 LTS: libx11-6 2:1.6.4-3ubuntu0.3
  Ubuntu 16.04 LTS: libx11-6 2:1.6.3-1ubuntu2.2
  Ubuntu 14.04 ESM: libx11-6 2:1.6.2-1ubuntu2.1+esm1
  Ubuntu 12.04 ESM: libx11-6 2:1.4.99.1-0ubuntu2.5
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