Synopsis
Important: redhat-virtualization-host security and enhancement update
Type/Severity
Security Advisory: Important
Topic
An update for redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. 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.
Description
The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.
The following packages have been upgraded to a later upstream version: redhat-release-virtualization-host (4.3.4), redhat-virtualization-host (4.3.4). (BZ#1721058, BZ#1721062, BZ#1721065)
Security Fix(es):
- kernel: tcp: integer ovrtflow while processing SACK blocks allows remote denial of service (CVE-2019-11477)
- libvirt: arbitrary file read/exec via virDomainSaveImageGetXMLDesc API (CVE-2019-10161)
- libvirt: virDomainManagedSaveDefineXML API exposed to readonly clients (CVE-2019-10166)
- libvirt: arbitrary command execution via virConnectGetDomainCapabilities API (CVE-2019-10167)
- libvirt: arbitrary command execution via virConnectBaselineHypervisorCPU and virConnectCompareHypervisorCPU APIs (CVE-2019-10168)
- Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478)
- kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479)
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.
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/2974891
Affected Products
-
Red Hat Virtualization 4 for RHEL 7 x86_64
-
Red Hat Virtualization Host 4 x86_64
Fixes
- BZ - 1719123 - CVE-2019-11477 Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service
- BZ - 1719128 - CVE-2019-11478 Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service
- BZ - 1719129 - CVE-2019-11479 kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service
- BZ - 1720114 - CVE-2019-10166 libvirt: virDomainManagedSaveDefineXML API exposed to readonly clients
- BZ - 1720115 - CVE-2019-10161 libvirt: arbitrary file read/exec via virDomainSaveImageGetXMLDesc API
- BZ - 1720117 - CVE-2019-10167 libvirt: arbitrary command execution via virConnectGetDomainCapabilities API
- BZ - 1720118 - CVE-2019-10168 libvirt: arbitrary command execution via virConnectBaselineHypervisorCPU and virConnectCompareHypervisorCPU APIs
- BZ - 1721365 - RHV-H 4.3 rebase on RHEL 7.6 async
CVEs
References
Vulmon