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 QEMU: overload via e1000

Synthesis of the vulnerability 

An attacker, inside a guest system, can trigger an overload via e1000 of QEMU, in order to trigger a denial of service on the host system.
Impacted systems: Debian, QEMU, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 1/4.
Creation date: 25/02/2021.
Références of this alert: CVE-2021-20257, DLA-2623-1, SUSE-SU-2021:1023-1, SUSE-SU-2021:1240-1, SUSE-SU-2021:1241-1, SUSE-SU-2021:1242-1, SUSE-SU-2021:1243-1, SUSE-SU-2021:1244-1, SUSE-SU-2021:1245-1, VIGILANCE-VUL-34685.

Description of the vulnerability 

An attacker, inside a guest system, can trigger an overload via e1000 of QEMU, in order to trigger a denial of service on the host system.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This cybersecurity alert impacts software or systems such as Debian, QEMU, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this weakness is low.

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 security weakness.

Solutions for this threat 

QEMU: patch for e1000.
A patch is indicated in information sources.

Debian 9: new qemu packages (12/04/2021).
New packages are available:
  Debian 9: qemu 1:2.8+dfsg-6+deb9u14

SUSE LE 12 SP3: new qemu packages.
New packages are available:
  SUSE LE 12 SP3: qemu 2.9.1-6.47.1

SUSE LE 12 SP4: new qemu packages.
New packages are available:
  SUSE LE 12 SP4: qemu 2.11.2-5.29.1

SUSE LE 12 SP5: new qemu packages.
New packages are available:
  SUSE LE 12 SP5: qemu 3.1.1.1-48.2

SUSE LE 12 SP5: new xen packages (07/04/2021).
New packages are available:
  SUSE LE 12 SP5: xen 4.12.4_09-3.39.3

SUSE LE 15 RTM: new qemu packages.
New packages are available:
  SUSE LE 15 RTM: qemu 2.11.2-9.43.1

SUSE LE 15 SP1: new qemu packages.
New packages are available:
  SUSE LE 15 SP1: qemu 3.1.1.1-9.24.3

SUSE LE 15 SP2: new qemu packages.
New packages are available:
  SUSE LE 15 SP2: qemu 4.2.1-11.16.3
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a computer vulnerability watch. Each administrator can customize the list of products for which he wants to receive vulnerability alerts.