==========================================================================
Ubuntu Security Notice USN-7060-1
October 10, 2024

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

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

- Ubuntu 22.04 LTS
- 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:

It was discovered that EDK II did not check the buffer length in XHCI,
which could lead to a stack overflow. A local attacker could potentially
use this issue to cause a denial of service. This issue only affected
Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-0161)

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. This issue only affected
Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (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. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2021-28211)

It was discovered that EDK II incorrectly decoded certain strings. A remote
attacker could use this issue to cause EDK II to crash, resulting in a
denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2021-38575)

It was discovered that EDK II had integer underflow vulnerability in
SmmEntryPoint, which could result in a buffer overflow. An attacker
could potentially use this issue to cause a denial of service.
(CVE-2021-38578)

Elison Niven discovered that OpenSSL, vendored in EDK II, incorrectly
handled the c_rehash script. A local attacker could possibly use this
issue to execute arbitrary commands when c_rehash is run. This issue
only affected Ubuntu 16.04 LTS. (CVE-2022-1292)

Update instructions:

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

Ubuntu 22.04 LTS
   ovmf                            2022.02-3ubuntu0.22.04.3
   ovmf-ia32                       2022.02-3ubuntu0.22.04.3
   qemu-efi-aarch64                2022.02-3ubuntu0.22.04.3
   qemu-efi-arm                    2022.02-3ubuntu0.22.04.3

Ubuntu 20.04 LTS
   ovmf                            0~20191122.bd85bf54-2ubuntu3.6
   qemu-efi-aarch64                0~20191122.bd85bf54-2ubuntu3.6
   qemu-efi-arm                    0~20191122.bd85bf54-2ubuntu3.6

Ubuntu 18.04 LTS
   ovmf 0~20180205.c0d9813c-2ubuntu0.3+esm2
                                   Available with Ubuntu Pro
   qemu-efi-aarch64 0~20180205.c0d9813c-2ubuntu0.3+esm2
                                   Available with Ubuntu Pro
   qemu-efi-arm 0~20180205.c0d9813c-2ubuntu0.3+esm2
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   ovmf 0~20160408.ffea0a2c-2ubuntu0.2+esm3
                                   Available with Ubuntu Pro
   qemu-efi 0~20160408.ffea0a2c-2ubuntu0.2+esm3
                                   Available with Ubuntu Pro

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-7060-1
   CVE-2019-0161, CVE-2021-28210, CVE-2021-28211, CVE-2021-38575,
   CVE-2021-38578, CVE-2022-1292

Package Information:
https://launchpad.net/ubuntu/+source/edk2/2022.02-3ubuntu0.22.04.3
https://launchpad.net/ubuntu/+source/edk2/0~20191122.bd85bf54-2ubuntu3.6