Detections
Analytics
RHEL 8 : Red Hat Virtualization Host security update [ovirt-4.4.7] (Important) (RHSA-2021:3235)
high Nessus Plugin ID 152688
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Synopsis
The remote Red Hat host is missing one or more security updates for Red Hat Virtualization Host.Description
The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3235 advisory.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.
Security Fix(es):
* edk2: remote buffer overflow in IScsiHexToBin function in NetworkPkg/IScsiDxe ()
* kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
* kernel: race condition in net/can/bcm.c leads to local privilege escalation (CVE-2021-3609)
* sssd: shell command injection in sssctl (CVE-2021-3621)
* kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
* Rebase package(s) to version: 1.2.23
Highlights, important fixes, or notable enhancements:
* imgbase should not copy the selinux binary policy file (BZ# 1979624) (BZ#1989397)
* RHV-H has been rebased on Red Hat Enterprise Linux 8.4 Batch #2. (BZ#1975177)
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL Red Hat Virtualization Host package based on the guidance in RHSA-2021:3235.See Also
http://www.nessus.org/u?c8e51720
https://access.redhat.com/errata/RHSA-2021:3235
https://bugzilla.redhat.com/show_bug.cgi?id=1956284
https://bugzilla.redhat.com/show_bug.cgi?id=1965461
https://bugzilla.redhat.com/show_bug.cgi?id=1971651
https://bugzilla.redhat.com/show_bug.cgi?id=1975142
https://bugzilla.redhat.com/show_bug.cgi?id=1975177
https://bugzilla.redhat.com/show_bug.cgi?id=1980101
https://bugzilla.redhat.com/show_bug.cgi?id=1989397
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 152688
File Name: redhat-RHSA-2021-3235.nasl
Version: 1.16
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 8/19/2021
Updated: 11/7/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.7
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 8.1
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-3621
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 8.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 8.7
Threat Score: 8.7
Threat Vector: CVSS:4.0/E:A
Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
CVSS Score Source: CVE-2021-22543
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host-image-update, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:redhat-virtualization-host
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/19/2021
Vulnerability Publication Date: 4/20/2021
Exploitable With
CANVAS (CANVAS)
Core Impact
Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)
Reference Information
CVE: CVE-2021-22543, CVE-2021-22555, CVE-2021-3609, CVE-2021-3621, CVE-2021-38575