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Red Hat: RHSA-2019-2125-01 Moderate: ovmf Privilege Escalation Issues

red hat
Calendar Grey August 6, 2019
Dist Redhat Esm H88
Oracle has released a critical patch for VirtualBox, tackling vulnerabilities that could lead to unauthorized access and code execution exploits.
An update for ovmf is now available for Red Hat Enterprise Linux 7

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

Summary

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.

Topics%20covered

Topics Covered

security advisory Red Hat buffer overflow privilege escalation Denial of Service ovmf modest

References

https://access.redhat.com/security/cve/CVE-2017-5731 https://access.redhat.com/security/cve/CVE-2017-5732 https://access.redhat.com/security/cve/CVE-2017-5733 https://access.redhat.com/security/cve/CVE-2017-5734 https://access.redhat.com/security/cve/CVE-2017-5735 https://access.redhat.com/security/cve/CVE-2018-3613 https://access.redhat.com/security/cve/CVE-2018-5407 https://access.redhat.com/security/cve/CVE-2018-12181 https://access.redhat.com/security/cve/CVE-2019-0160 https://access.redhat.com/security/cve/CVE-2019-0161 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: ovmf-20180508-6.gitee3198e672e2.el7.src.rpm
noarch: OVMF-20180508-6.gitee3198e672e2.el7.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2125-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2125
Issue date: 2019-08-06

Topic

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat buffer overflow privilege escalation Denial of Service ovmf modest

Relevant Releases Architectures

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

Bugs Fixed

1641433 - CVE-2018-3613 edk2: Logic error in MdeModulePkg in EDK II firmware allows for privilege escalation by authenticated users1641442 - 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

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