ALAS2-2019-1273

Amazon Linux 2 Security Advisory: ALAS-2019-1273
Advisory Release Date: 2019-08-23 03:26 Pacific
Advisory Updated Date: 2019-08-27 21:52 Pacific
Severity: Important
Issue Overview:

Logic error in FV parsing in MdeModulePkg\Core\Pei\FwVol\FwVol.c (CVE-2018-3630)

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. (CVE-2017-5734)

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 heap-based buffer overflow in Decode() function (CVE-2017-5735)

Privilege escalation via heap-based buffer overflow in MakeTable() function (CVE-2017-5733)

Privilege escalation via processing of malformed files in TianoCompress.c (CVE-2017-5731)

Privilege escalation via processing of malformed files in BaseUefiDecompressLib.c (CVE-2017-5732)

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.

New Packages:
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

Additional References

Red Hat: CVE-2017-5731, CVE-2017-5732, CVE-2017-5733, CVE-2017-5734, CVE-2017-5735, CVE-2018-12178, CVE-2018-12180, CVE-2018-12181, CVE-2018-3613, CVE-2018-3630

Mitre: CVE-2017-5731, CVE-2017-5732, CVE-2017-5733, CVE-2017-5734, CVE-2017-5735, CVE-2018-12178, CVE-2018-12180, CVE-2018-12181, CVE-2018-3613, CVE-2018-3630