Medium: edk2

Issue Overview:

Insufficient memory write check in SMM service for EDK II may allow an authenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via local access. (CVE-2018-12182)

Stack overflow in XHCI for EDK II may allow an unauthenticated user to potentially enable denial of service via local access. (CVE-2019-0161)

Buffer overflows were discovered in UDF-related codes under MdeModulePkg\Universal\Disk\PartitionDxe\Udf.c and MdeModulePkg\Universal\Disk\UdfDxe, which could be triggered with long file names or invalid formatted UDF media. (CVE-2019-0160)

Stack overflow in DxeCore for EDK II may allow an unauthenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via local access. (CVE-2018-12183)

Improper configuration in system firmware for EDK II may allow unauthenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via local access. (CVE-2018-12179)

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-20190501stable-2.amzn2.0.1.aarch64  
    edk2-debuginfo-20190501stable-2.amzn2.0.1.aarch64  
  
noarch:  
    edk2-tools-python-20190501stable-2.amzn2.0.1.noarch  
    edk2-tools-doc-20190501stable-2.amzn2.0.1.noarch  
    edk2-aarch64-20190501stable-2.amzn2.0.1.noarch  
    edk2-ovmf-20190501stable-2.amzn2.0.1.noarch  
  
src:  
    edk2-20190501stable-2.amzn2.0.1.src  
  
x86_64:  
    edk2-tools-20190501stable-2.amzn2.0.1.x86_64  
    edk2-debuginfo-20190501stable-2.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2018-12179, CVE-2018-12182, CVE-2018-12183, CVE-2019-0160, CVE-2019-0161

Mitre: CVE-2018-12179, CVE-2018-12182, CVE-2018-12183, CVE-2019-0160, CVE-2019-0161