ALAS2-2020-1510

Amazon Linux 2 Security Advisory: ALAS-2020-1510
Advisory Release Date: 2020-10-22 17:30 Pacific
Advisory Updated Date: 2020-10-22 22:38 Pacific
Severity: Medium
Issue Overview:

Insufficient control flow management in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 & 5000 Series Processors may allow an authenticated user to potentially enable denial of service via adjacent access. (CVE-2019-14558)

Memory leak in ArpOnFrameRcvdDpc (CVE-2019-14559)

Numeric truncation in MdeModulePkg/PiDxeS3BootScriptLib (CVE-2019-14563)

DxeImageVerificationHandler() fails open in case of dbx signature check (CVE-2019-14575)

Potential use-after-free due to the original configuration runtime memory is freed but it is still exposed to the OS runtime (CVE-2019-14586)

Double-unmap issue in SdMmcCreateTrb function in MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.c (CVE-2019-14587)


Affected Packages:

edk2


Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update edk2 to update your system.

New Packages:
aarch64:
    edk2-tools-20200801stable-1.amzn2.0.1.aarch64
    edk2-debuginfo-20200801stable-1.amzn2.0.1.aarch64

noarch:
    edk2-tools-python-20200801stable-1.amzn2.0.1.noarch
    edk2-tools-doc-20200801stable-1.amzn2.0.1.noarch
    edk2-aarch64-20200801stable-1.amzn2.0.1.noarch
    edk2-ovmf-20200801stable-1.amzn2.0.1.noarch

src:
    edk2-20200801stable-1.amzn2.0.1.src

x86_64:
    edk2-tools-20200801stable-1.amzn2.0.1.x86_64
    edk2-debuginfo-20200801stable-1.amzn2.0.1.x86_64

Additional References

Red Hat: CVE-2019-14558, CVE-2019-14559, CVE-2019-14563, CVE-2019-14575, CVE-2019-14586, CVE-2019-14587

Mitre: CVE-2019-14558, CVE-2019-14559, CVE-2019-14563, CVE-2019-14575, CVE-2019-14586, CVE-2019-14587