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redhatRedHatRHSA-2021:3477
HistorySep 09, 2021 - 9:04 a.m.

(RHSA-2021:3477) Important: RHV-H security update (redhat-virtualization-host) 4.3.18

2021-09-0909:04:57
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32

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.097 Low

EPSS

Percentile

94.7%

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.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.097 Low

EPSS

Percentile

94.7%