7.5 - RHSA-2019:2125

Problem Description:

An update for ovmf is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server (v. 7) - noarch

3. Description:

OVMF (Open Virtual Machine Firmware) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM.

Security Fix(es):

* edk2: Privilege escalation via processing of malformed files in TianoCompress.c (CVE-2017-5731)

* edk2: Privilege escalation via processing of malformed files in BaseUefiDecompressLib.c (CVE-2017-5732)

* edk2: Privilege escalation via heap-based buffer overflow in MakeTable() function (CVE-2017-5733)

* edk2: Privilege escalation via stack-based buffer overflow in MakeTable() function (CVE-2017-5734)

* edk2: Privilege escalation via heap-based buffer overflow in Decode() function (CVE-2017-5735)

* edk2: Logic error in MdeModulePkg in EDK II firmware allows for privilege escalation by authenticated users (CVE-2018-3613)

* openssl: Side-channel vulnerability on SMT/Hyper-Threading architectures (PortSmash) (CVE-2018-5407)

* edk2: Stack buffer overflow with corrupted BMP (CVE-2018-12181)

* edk2: buffer overflows in PartitionDxe and UdfDxe with long file names and invalid UDF media (CVE-2019-0160)

* edk2: stack overflow in XHCI causing denial of service (CVE-2019-0161)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1641433 - CVE-2018-3613 edk2: Logic error in MdeModulePkg in EDK II firmware allows for privilege escalation by authenticated users 1641442 - CVE-2017-5731 edk2: Privilege escalation via processing of malformed files in TianoCompress.c 1641446 - CVE-2017-5732 edk2: Privilege escalation via processing of malformed files in BaseUefiDecompressLib.c 1641450 - CVE-2017-5733 edk2: Privilege escalation via heap-based buffer overflow in MakeTable() function 1641458 - CVE-2017-5734 edk2: Privilege escalation via stack-based buffer overflow in MakeTable() function 1641465 - CVE-2017-5735 edk2: Privilege escalation via heap-based buffer overflow in Decode() function 1645695 - CVE-2018-5407 openssl: Side-channel vulnerability on SMT/Hyper-Threading architectures (PortSmash) 1686783 - CVE-2018-12181 edk2: Stack buffer overflow with corrupted BMP 1691640 - CVE-2019-0160 edk2: buffer overflows in PartitionDxe and UdfDxe with long file names and invalid UDF media 1694065 - CVE-2019-0161 edk2: stack overflow in XHCI causing denial of service