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Vulnerability of OVMF: buffer overflow via DxeImageVerificationHandler

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via DxeImageVerificationHandler() of OVMF, in order to trigger a denial of service, and possibly to run code.
Impacted systems: openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 2/4.
Creation date: 21/09/2020.
Références of this alert: CVE-2019-14562, openSUSE-SU-2020:1525-1, openSUSE-SU-2020:1535-1, SUSE-SU-2020:2691-1, SUSE-SU-2020:2713-1, SUSE-SU-2020:2714-1, SUSE-SU-2020:3126-1, VIGILANCE-VUL-33377.

Description of the vulnerability 

An attacker can trigger a buffer overflow via DxeImageVerificationHandler() of OVMF, in order to trigger a denial of service, and possibly to run code.
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This computer threat note impacts software or systems such as openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this weakness alert 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 computer weakness note.

Solutions for this threat 

openSUSE Leap 15.1: new ovmf packages.
New packages are available:
  openSUSE Leap 15.1: ovmf 2017+git1510945757.b2662641d5-lp151.11.9.1

openSUSE Leap 15.2: new ovmf packages.
New packages are available:
  openSUSE Leap 15.2: ovmf 201911-lp152.6.5.1

SUSE LE 12: new ovmf packages.
New packages are available:
  SUSE LE 12 SP4: ovmf 2017+git1510945757.b2662641d5-3.29.1
  SUSE LE 12 SP5: ovmf 2017+git1510945757.b2662641d5-3.29.1

SUSE LE 12 SP2: new ovmf packages (04/11/2020).
New packages are available:
  SUSE LE 12 SP2: ovmf 2015+git1462940744.321151f-19.15.1

SUSE LE 15 RTM: new qemu-ovmf packages.
New packages are available:
  SUSE LE 15 RTM: qemu-ovmf-x86_64 2017+git1510945757.b2662641d5-5.35.1

SUSE LE 15 SP2: new ovmf packages.
New packages are available:
  SUSE LE 15 SP2: ovmf 201911-7.5.2
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