Amazon Linux 2 Security Advisory: ALAS2-2019-1273
Advisory Released Date: 2019-08-23
Advisory Updated Date: 2025-07-02
FAQs regarding Amazon Linux ALAS/CVE Severity
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. (CVE-2018-3613)
improper DNS packet size check (CVE-2018-12178)
Privilege escalation via processing of malformed files in TianoCompress.c (CVE-2017-5731)
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. (CVE-2018-12181)
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. (CVE-2018-12180)
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.
aarch64:
edk2-tools-20190308stable-1.amzn2.0.1.aarch64
edk2-debuginfo-20190308stable-1.amzn2.0.1.aarch64
noarch:
edk2-tools-python-20190308stable-1.amzn2.0.1.noarch
edk2-tools-doc-20190308stable-1.amzn2.0.1.noarch
edk2-aarch64-20190308stable-1.amzn2.0.1.noarch
edk2-ovmf-20190308stable-1.amzn2.0.1.noarch
src:
edk2-20190308stable-1.amzn2.0.1.src
x86_64:
edk2-tools-20190308stable-1.amzn2.0.1.x86_64
edk2-debuginfo-20190308stable-1.amzn2.0.1.x86_64