RedHat: RHSA-2021-3477:01 Important: RHV-H security update
Summary
The redhat-virtualization-host packages provide the Red Hat Virtualization
Host.
These packages include redhat-release-virtualization-host. 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.
Security Fix(es):
* sssd: shell command injection in sssctl (CVE-2021-3621)
* kernel: use-after-free in route4_change() in net/sched/cls_route.c
(CVE-2021-3715)
* kernel: out-of-bounds write in xt_compat_target_from_user() in
net/netfilter/x_tables.c (CVE-2021-22555)
* libX11: missing request length checks (CVE-2021-31535)
* kernel: race condition for removal of the HCI controller (CVE-2021-32399)
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.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2021-3621 https://access.redhat.com/security/cve/CVE-2021-3715 https://access.redhat.com/security/cve/CVE-2021-22555 https://access.redhat.com/security/cve/CVE-2021-31535 https://access.redhat.com/security/cve/CVE-2021-32399 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Virtualization 4 Hypervisor for RHEL 7:
Source:
redhat-virtualization-host-4.3.18-20210903.0.el7_9.src.rpm
noarch:
redhat-virtualization-host-image-update-4.3.18-20210903.0.el7_9.noarch.rpm
RHEL 7-based RHEV-H for RHEV 4 (build requirements):
Source:
redhat-release-virtualization-host-4.3.18-1.el7ev.src.rpm
redhat-virtualization-host-4.3.18-20210903.0.el7_9.src.rpm
noarch:
redhat-virtualization-host-image-update-4.3.18-20210903.0.el7_9.noarch.rpm
redhat-virtualization-host-image-update-placeholder-4.3.18-1.el7ev.noarch.rpm
x86_64:
redhat-release-virtualization-host-4.3.18-1.el7ev.x86_64.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/
Topic
An update for redhat-release-virtualization-host andredhat-virtualization-host is now available for Red Hat Virtualization 4for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
RHEL 7-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64
Red Hat Virtualization 4 Hypervisor for RHEL 7 - noarch
Bugs Fixed
1961822 - CVE-2021-31535 libX11: missing request length checks
1970807 - CVE-2021-32399 kernel: race condition for removal of the HCI controller
1975142 - CVE-2021-3621 sssd: shell command injection in sssctl
1980101 - CVE-2021-22555 kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c
1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c
