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Red Hat: RHSA-2022:1263-01 Critical Update: DoS Risks in RHV-H

red hat
Calendar Grey April 7, 2022
Scroller Redhat
Urgent security patch released for Red Hat Virtualization Host addressing several significant vulnerabilities. Immediate action required!
An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 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/2974891

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):
* kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
* kernel: use-after-free in RDMA listen() (CVE-2021-4028)
* kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)
* aide: heap-based buffer overflow on outputs larger than B64_BUF (CVE-2021-45417)
* kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)
* openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates (CVE-2022-0778)
* kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)
* cyrus-sasl: failure to properly escape SQL input allows an attacker to execute arbitrary SQL commands (CVE-2022-24407)
* expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
* expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)
* expat: Integer overflow in storeRawNames() (CVE-2022-25315)
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.
Bug Fix(es):
* RHV-H has been rebased on RHEL-7.9.z #13 (BZ#2048409)

Topics%20covered

Topics Covered

security advisory Red Hat important DoS risk RHV-H update

References

https://access.redhat.com/security/cve/CVE-2021-0920 https://access.redhat.com/security/cve/CVE-2021-4028 https://access.redhat.com/security/cve/CVE-2021-4083 https://access.redhat.com/security/cve/CVE-2021-4155 https://access.redhat.com/security/cve/CVE-2021-45417 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-0778 https://access.redhat.com/security/cve/CVE-2022-22942 https://access.redhat.com/security/cve/CVE-2022-24407 https://access.redhat.com/security/cve/CVE-2022-25235 https://access.redhat.com/security/cve/CVE-2022-25236 https://access.redhat.com/security/cve/CVE-2022-25315 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Virtualization 4 Hypervisor for RHEL 7:
Source: redhat-virtualization-host-4.3.22-20220330.1.el7_9.src.rpm
noarch: redhat-virtualization-host-image-update-4.3.22-20220330.1.el7_9.noarch.rpm
RHEL 7-based RHEV-H for RHEV 4 (build requirements):
Source: redhat-release-virtualization-host-4.3.22-1.el7ev.src.rpm redhat-virtualization-host-4.3.22-20220330.1.el7_9.src.rpm redhat-virtualization-host-productimg-4.3.22-1.el7.src.rpm
noarch: redhat-virtualization-host-image-update-4.3.22-20220330.1.el7_9.noarch.rpm redhat-virtualization-host-image-update-placeholder-4.3.22-1.el7ev.noarch.rpm
x86_64: redhat-release-virtualization-host-4.3.22-1.el7ev.x86_64.rpm redhat-virtualization-host-productimg-4.3.22-1.el7.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:1263-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2022:1263
Issue date: 2022-04-07

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.

Topics%20covered

Topics Covered

security advisory Red Hat important DoS risk RHV-H update

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

2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()

2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it

2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation

2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL

2041489 - CVE-2021-45417 aide: heap-based buffer overflow on outputs larger than B64_BUF

2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush

2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation

2048409 - Rebase RHV-H 4.3 on RHEL 7.9 batch #13

2055326 - CVE-2022-24407 cyrus-sasl: failure to properly escape SQL input allows an attacker to execute arbitrary SQL commands

2056363 - CVE-2022-25315 expat: Integer overflow in storeRawNames()

2056366 - CVE-2022-25235 expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution

2056370 - CVE-2022-25236 expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution

2062202 - CVE-2022-0778 openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates

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