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 libxml2: use after free via xmlXPathCompOpEvalPositionalPredicate

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via xmlXPathCompOpEvalPositionalPredicate() of libxml2, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Debian, VNX Operating Environment, VNX Series, Fedora, Chrome, libxml, openSUSE Leap, Opera, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 13/12/2017.
Références of this bulletin: CVE-2017-15412, DLA-1211-1, DSA-2020-030, DSA-4064-1, DSA-4086-1, FEDORA-2017-c2645aa935, FEDORA-2017-ea44f172e3, FEDORA-2018-faff5f661e, openSUSE-SU-2017:3244-1, openSUSE-SU-2017:3245-1, openSUSE-SU-2018:0418-1, RHSA-2017:3401-01, RHSA-2020:1190-01, USN-3513-1, USN-3513-2, VIGILANCE-VUL-24762.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via xmlXPathCompOpEvalPositionalPredicate() of libxml2, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer vulnerability announce impacts software or systems such as Debian, VNX Operating Environment, VNX Series, Fedora, Chrome, libxml, openSUSE Leap, Opera, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity 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 alert.

Solutions for this threat 

Google Chrome: version 63.0.3239.84.
The version 63.0.3239.84 is fixed:
  https://www.google.fr/chrome/browser/desktop/

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

Debian 9: new chromium-browser packages (12/12/2017).
New packages are available:
  Debian 9: chromium-browser 63.0.3239.84-1~deb9u1

Debian: new libxml2 packages.
New packages are available:
  Debian 7: libxml2 2.8.0+dfsg1-7+wheezy12
  Debian 8: libxml2 2.9.1+dfsg1-5+deb8u6
  Debian 9: libxml2 2.9.4+dfsg1-2.2+deb9u2

Dell EMC VNXe3200: version 3.1.11.10003441.
The version 3.1.11.10003441 is fixed:
  https://www.dell.com/support/

Fedora 27: new chromium packages.
New packages are available:
  Fedora 27: chromium 65.0.3325.181-1.fc27

Fedora: new chromium packages.
New packages are available:
  Fedora 26: chromium 63.0.3239.108-1.fc26
  Fedora 27: chromium 63.0.3239.108-1.fc27

openSUSE Leap: new chromium packages.
New packages are available:
  openSUSE Leap 42.2: chromium 63.0.3239.84-104.41.1
  openSUSE Leap 42.3: chromium 63.0.3239.84-127.1

openSUSE Leap: new libxml2 packages.
New packages are available:
  openSUSE Leap 42.3: libxml2 2-2.9.4-15.1

RHEL 6.9: new chromium-browser packages.
New packages are available:
  RHEL 6: chromium-browser 63.0.3239.84-1.el6_9

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

SUSE LE 12: new chromium packages.
New packages are available:
  SUSE LE 12 RTM-SP3: chromium 63.0.3239.84-40.1

Ubuntu: new libxml2 packages.
New packages are available:
  Ubuntu 17.10: libxml2 2.9.4+dfsg1-4ubuntu1.2
  Ubuntu 17.04: libxml2 2.9.4+dfsg1-2.2ubuntu0.3
  Ubuntu 16.04 LTS: libxml2 2.9.3+dfsg1-1ubuntu0.5
  Ubuntu 14.04 LTS: libxml2 2.9.1+dfsg1-3ubuntu4.12
  Ubuntu 12.04 ESM: libxml2 2.7.8.dfsg-5.1ubuntu4.20

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.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a system vulnerability announce. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications.