Important: edk2 security update (Amazon Linux 2)

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2018-3613: Logic issue in variable service module for EDK II/UDK2018/UDK2017/UDK2015 may allow an authenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via local access. 1641433: CVE-2018-3613 edk2: Logic error in MdeModulePkg in EDK II firmware allows for privilege escalation by authenticated users CVE-2018-12181: A stack-based buffer overflow was discovered in edk2 when the HII database contains a Bitmap that claims to be 4-bit or 8-bit per pixel, but the palette contains more than 16(2^4) or 256(2^8) colors. 1686783: CVE-2018-12181 edk2: Stack buffer overflow with corrupted BMP CVE-2018-12180: Buffer overflow in BlockIo service for EDK II may allow an unauthenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via network access. 1683372: CVE-2018-12180 edk2: Buffer Overflow in BlockIo service for RAM disk CVE-2018-12178: A missing check leads to an out-of-bounds read and write flaw in NetworkPkg/DnsDxe as shipped in edk2, when it parses DNS responses. A remote attacker who controls the DNS server used by the vulnerable firmware may use this flaw to make the system crash. 1683326: CVE-2018-12178 edk2: improper DNS packet size check CVE-2017-5731: 1641442: CVE-2017-5731 edk2: Privilege escalation via processing of malformed files in TianoCompress.c