[USN-4923-1] EDK II vulnerabilities
Marc Deslauriers
marc.deslauriers at canonical.com
Tue Apr 20 18:18:37 UTC 2021
==========================================================================
Ubuntu Security Notice USN-4923-1
April 20, 2021
edk2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10
- Ubuntu 20.04 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 handled recursion. A
remote attacker could possibly use this issue to cause EDK II to consume
resources, leading to a denial of service. (CVE-2021-28210)
Satoshi Tanda discovered that EDK II incorrectly handled decompressing
certain images. A remote attacker could use this issue to cause EDK II to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2021-28211)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
ovmf 2020.05-5ubuntu0.2
qemu-efi 2020.05-5ubuntu0.2
qemu-efi-aarch64 2020.05-5ubuntu0.2
qemu-efi-arm 2020.05-5ubuntu0.2
Ubuntu 20.04 LTS:
ovmf 0~20191122.bd85bf54-2ubuntu3.2
qemu-efi 0~20191122.bd85bf54-2ubuntu3.2
qemu-efi-aarch64 0~20191122.bd85bf54-2ubuntu3.2
qemu-efi-arm 0~20191122.bd85bf54-2ubuntu3.2
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://ubuntu.com/security/notices/USN-4923-1
CVE-2021-28210, CVE-2021-28211
Package Information:
https://launchpad.net/ubuntu/+source/edk2/2020.05-5ubuntu0.2
https://launchpad.net/ubuntu/+source/edk2/0~20191122.bd85bf54-2ubuntu3.2
-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20210420/fbf1ca98/attachment.sig>
More information about the ubuntu-security-announce
mailing list