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Vulnerability of libxml2: infinite loop via LZMA Decompression

Synthesis of the vulnerability 

An attacker can generate an infinite loop via LZMA Decompression of libxml2, in order to trigger a denial of service.
Vulnerable software: Debian, libxml, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 2/4.
Creation date: 17/08/2018.
Références of this computer vulnerability: 794914, CVE-2018-14567, DLA-1524-1, openSUSE-SU-2018:3107-1, openSUSE-SU-2018:3110-1, openSUSE-SU-2019:2612-1, openSUSE-SU-2019:2629-1, RHSA-2020:1190-01, SUSE-SU-2018:3080-1, SUSE-SU-2018:3081-1, USN-3739-1, USN-3739-2, VIGILANCE-VUL-27037.

Description of the vulnerability 

An attacker can generate an infinite loop via LZMA Decompression of libxml2, in order to trigger a denial of service.
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This security weakness impacts software or systems such as Debian, libxml, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this threat bulletin 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.

Solutions for this threat 

libxml2: version 2.9.9.
The version 2.9.9 is fixed:
  ftp://xmlsoft.org/libxml2/

libxml2: patch for xz_decomp.
A patch is indicated in information sources.

Debian 8: new libxml2 packages.
New packages are available:
  Debian 8: libxml2 2.9.1+dfsg1-5+deb8u7

openSUSE Leap 15.0: new libxml2 packages.
New packages are available:
  openSUSE Leap 15.0: libxml2 2-2.9.7-lp150.2.3.1

openSUSE Leap 15: new libxml2 packages.
New packages are available:
  openSUSE Leap 15.0: libxml2 2-2.9.7-lp150.2.14.1
  openSUSE Leap 15.1: libxml2 2-2.9.7-lp151.5.6.1

openSUSE Leap 42.3: new libxml2 packages.
New packages are available:
  openSUSE Leap 42.3: libxml2 2-2.9.4-18.1

RHEL 7: new libxml2 packages.
New packages are available:
  RHEL 7.0-7.7: libxml2 2.9.1-6.el7.4

SUSE LE 12 SP3: new libxml2 packages.
New packages are available:
  SUSE LE 12 SP3: libxml2 2-2.9.4-46.15.1

SUSE LE 15: new libxml2 packages.
New packages are available:
  SUSE LE 15 RTM: libxml2 2-2.9.7-3.3.1

Ubuntu: new libxml2 packages.
New packages are available:
  Ubuntu 18.04 LTS: libxml2 2.9.4+dfsg1-6.1ubuntu1.2
  Ubuntu 16.04 LTS: libxml2 2.9.3+dfsg1-1ubuntu0.6
  Ubuntu 14.04 LTS: libxml2 2.9.1+dfsg1-3ubuntu4.13
  Ubuntu 12.04 ESM: libxml2 2.7.8.dfsg-5.1ubuntu4.21

Wind River Linux: solution (16/10/2018).
The solution is indicated in information sources.

Wind River Linux: solution (28/11/2018).
The solution is indicated in information sources.
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