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Sicherheit: Zwei Probleme in EDK
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in EDK
ID: USN-4684-1
Distribution: Ubuntu
Plattformen: Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10
Datum: Fr, 8. Januar 2021, 09:52
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14584
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14562
Applikationen: EDK

Originalnachricht

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
<ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <5541f6d2-5643-618d-c221-87a5d5ad5020@canonical.com>
Subject: [USN-4684-1] EDK II vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-4684-1
January 07, 2021

edk2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in EDK II.

Software Description:
- edk2: UEFI firmware for virtual machines

Details:

Laszlo Ersek discovered that EDK II incorrectly validated certain signed
images. An attacker could possibly use this issue with a specially crafted
image to cause EDK II to hang, resulting in a denial of service. This issue
only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
(CVE-2019-14562)

It was discovered that EDK II incorrectly parsed signed PKCS #7 data. An
attacker could use this issue to cause EDK II to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2019-14584)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
ovmf 2020.05-5ubuntu0.1
qemu-efi 2020.05-5ubuntu0.1
qemu-efi-aarch64 2020.05-5ubuntu0.1
qemu-efi-arm 2020.05-5ubuntu0.1

Ubuntu 20.04 LTS:
ovmf 0~20191122.bd85bf54-2ubuntu3.1
qemu-efi 0~20191122.bd85bf54-2ubuntu3.1
qemu-efi-aarch64 0~20191122.bd85bf54-2ubuntu3.1
qemu-efi-arm 0~20191122.bd85bf54-2ubuntu3.1

Ubuntu 18.04 LTS:
ovmf 0~20180205.c0d9813c-2ubuntu0.3
qemu-efi 0~20180205.c0d9813c-2ubuntu0.3
qemu-efi-aarch64 0~20180205.c0d9813c-2ubuntu0.3
qemu-efi-arm 0~20180205.c0d9813c-2ubuntu0.3

Ubuntu 16.04 LTS:
ovmf 0~20160408.ffea0a2c-2ubuntu0.2
qemu-efi 0~20160408.ffea0a2c-2ubuntu0.2

After a standard system update you need to restart the virtual machines
that use the affected firmware to make all the necessary changes.

References:
https://usn.ubuntu.com/4684-1
CVE-2019-14562, CVE-2019-14584

Package Information:
https://launchpad.net/ubuntu/+source/edk2/2020.05-5ubuntu0.1
https://launchpad.net/ubuntu/+source/edk2/0~20191122.bd85bf54-2ubuntu3.1
https://launchpad.net/ubuntu/+source/edk2/0~20180205.c0d9813c-2ubuntu0.3
https://launchpad.net/ubuntu/+source/edk2/0~20160408.ffea0a2c-2ubuntu0.2


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