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Vulnerability of QEMU: privilege escalation via Seccomp Thread Blacklist

Synthesis of the vulnerability 

An attacker can bypass restrictions via Seccomp Thread Blacklist of QEMU, in order to escalate his privileges.
Vulnerable products: Fedora, openSUSE Leap, QEMU, RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 2/4.
Creation date: 28/08/2018.
Références of this bulletin: CVE-2018-15746, FEDORA-2018-87f2ace20d, openSUSE-SU-2018:4004-1, openSUSE-SU-2018:4147-1, RHSA-2020:3906-01, RHSA-2020:3907-01, SUSE-SU-2018:3912-1, SUSE-SU-2018:3927-1, SUSE-SU-2018:3973-1, SUSE-SU-2018:3975-1, SUSE-SU-2018:3987-1, SUSE-SU-2018:4129-1, SUSE-SU-2018:4185-1, SUSE-SU-2018:4237-1, VIGILANCE-VUL-27096.

Description of the vulnerability 

An attacker can bypass restrictions via Seccomp Thread Blacklist of QEMU, in order to escalate his privileges.
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This security bulletin impacts software or systems such as Fedora, openSUSE Leap, QEMU, RHEL, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat 

QEMU: version 3.1.
The version 3.1 is fixed:
  https://www.qemu.org/download/#source

QEMU: version 3.0.1.
The version 3.0.1 is fixed:
  https://www.qemu.org/download/#source

QEMU: patch for Seccomp Thread Blacklist.
A patch is indicated in information sources.

Fedora 29: new qemu packages.
New packages are available:
  Fedora 29: qemu 3.0.0-2.fc29

openSUSE Leap 15.0: new qemu packages (07/12/2018).
New packages are available:
  openSUSE Leap 15.0: qemu 1.0.0+-lp150.7.12.1

openSUSE Leap 42.3: new qemu packages.
New packages are available:
  openSUSE Leap 42.3: qemu 2.9.1-50.1

RHEL 7.8: new qemu-kvm-ma packages.
New packages are available:
  RHEL 7.0-7.8: qemu-kvm-ma 2.12.0-48.el7

RHEL 7.8: new qemu-kvm packages.
New packages are available:
  RHEL 7.0-7.8: qemu-kvm 1.5.3-175.el7

SUSE LE 11 SP3: new kvm packages.
New packages are available:
  SUSE LE 11 SP3: kvm 1.4.2-53.26.2

SUSE LE 11 SP4: new kvm packages.
New packages are available:
  SUSE LE 11 SP4: kvm 1.4.2-60.18.2

SUSE LE 12 RTM: new qemu packages.
New packages are available:
  SUSE LE 12 RTM: qemu 2.0.2-48.46.2

SUSE LE 12 SP1: new qemu packages.
New packages are available:
  SUSE LE 12 SP1: qemu 2.3.1-33.17.1

SUSE LE 12 SP2: new qemu packages.
New packages are available:
  SUSE LE 12 SP2: qemu 2.6.2-41.46.2

SUSE LE 12 SP3: new qemu packages.
New packages are available:
  SUSE LE 12 SP3: qemu 2.9.1-6.22.3

SUSE LE 12 SP4: new qemu packages.
New packages are available:
  SUSE LE 12 SP4: qemu 2.11.2-5.5.1

SUSE LE 15: new qemu packages (28/11/2018).
New packages are available:
  SUSE LE 15 RTM: qemu 2.11.2-9.12.2

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