RHSA-2022:5678
Vulnerability from csaf_redhat
Published
2022-07-21 12:34
Modified
2024-11-22 19:29
Summary
Red Hat Security Advisory: Red Hat Virtualization security, bug fix, and enhancement update [ovirt-4.5.1]

Notes

Topic
An update for imgbased, redhat-release-virtualization-host, and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 8. 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.
Details
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 (4.5.1), redhat-virtualization-host (4.5.1), redhat-virtualization-host-productimg (4.5.1). (BZ#2062192, BZ#2070869, BZ#2094682) Security Fix(es): * kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666) * grub2: Integer underflow in grub_net_recv_ip4_packets (CVE-2022-28733) 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 4.4 SP1 Has been rebased on RHEL 8.6 Batch #1 (BZ#2070869)
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.



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         cwe: {
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            name: "Heap-based Buffer Overflow",
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         discovery_date: "2022-03-08T00:00:00+00:00",
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         ids: [
            {
               system_name: "Red Hat Bugzilla ID",
               text: "2061633",
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         notes: [
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               category: "description",
               text: "A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.",
               title: "Vulnerability description",
            },
            {
               category: "summary",
               text: "kernel: buffer overflow in IPsec ESP transformation code",
               title: "Vulnerability summary",
            },
            {
               category: "general",
               text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
               title: "CVSS score applicability",
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            {
               category: "self",
               summary: "Canonical URL",
               url: "https://access.redhat.com/security/cve/CVE-2022-27666",
            },
            {
               category: "external",
               summary: "RHBZ#2061633",
               url: "https://bugzilla.redhat.com/show_bug.cgi?id=2061633",
            },
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               category: "external",
               summary: "https://www.cve.org/CVERecord?id=CVE-2022-27666",
               url: "https://www.cve.org/CVERecord?id=CVE-2022-27666",
            },
            {
               category: "external",
               summary: "https://nvd.nist.gov/vuln/detail/CVE-2022-27666",
               url: "https://nvd.nist.gov/vuln/detail/CVE-2022-27666",
            },
            {
               category: "external",
               summary: "https://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645",
               url: "https://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645",
            },
         ],
         release_date: "2022-03-11T06:30:00+00:00",
         remediations: [
            {
               category: "vendor_fix",
               date: "2022-07-21T12:34:16+00:00",
               details: "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/2974891",
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               url: "https://access.redhat.com/errata/RHSA-2022:5678",
            },
            {
               category: "workaround",
               details: "The given exploit needs CAP_NET_ADMIN to set up IPsec SA and a user namespace is used to get that capability, so disabling unprivileged user namespaces gives some protection.\n~~~\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable user namespaces by setting user.max_user_namespaces to 0:\n\n# echo \"user.max_user_namespaces=0\" > /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf\n\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.\n~~~\nNote: If the target system is already using IPsec and has SA configured, then no additional privileges are needed to exploit the issue.",
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                  "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-productimg-0:4.5.1-1.el8.src",
                  "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-productimg-0:4.5.1-1.el8.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  attackComplexity: "LOW",
                  attackVector: "LOCAL",
                  availabilityImpact: "HIGH",
                  baseScore: 7.8,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.1-202207170705_8.6.src",
                  "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.1-202207170705_8.6.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               details: "Important",
            },
         ],
         title: "kernel: buffer overflow in IPsec ESP transformation code",
      },
      {
         cve: "CVE-2022-28733",
         cwe: {
            id: "CWE-191",
            name: "Integer Underflow (Wrap or Wraparound)",
         },
         discovery_date: "2022-05-09T00:00:00+00:00",
         flags: [
            {
               label: "vulnerable_code_not_present",
               product_ids: [
                  "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.1-1.el8ev.src",
                  "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.1-1.el8ev.x86_64",
                  "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.5.1-1.el8ev.x86_64",
                  "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.5.1-1.el8ev.noarch",
                  "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-productimg-0:4.5.1-1.el8.src",
                  "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-productimg-0:4.5.1-1.el8.x86_64",
               ],
            },
         ],
         ids: [
            {
               system_name: "Red Hat Bugzilla ID",
               text: "2083339",
            },
         ],
         notes: [
            {
               category: "description",
               text: "A flaw was found in grub2 when handling IPv4 packets. This flaw allows an attacker to craft a malicious packet, triggering an integer underflow in grub code. Consequently, the memory allocation for handling the packet data may be smaller than the size needed. This issue causes an out-of-bands write during packet handling, compromising data integrity, confidentiality issues, a denial of service, and remote code execution.",
               title: "Vulnerability description",
            },
            {
               category: "summary",
               text: "grub2: Integer underflow in grub_net_recv_ip4_packets",
               title: "Vulnerability summary",
            },
            {
               category: "general",
               text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
               title: "CVSS score applicability",
            },
         ],
         product_status: {
            fixed: [
               "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.1-202207170705_8.6.src",
               "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.1-202207170705_8.6.x86_64",
            ],
            known_not_affected: [
               "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.1-1.el8ev.src",
               "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.1-1.el8ev.x86_64",
               "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.5.1-1.el8ev.x86_64",
               "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.5.1-1.el8ev.noarch",
               "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-productimg-0:4.5.1-1.el8.src",
               "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-productimg-0:4.5.1-1.el8.x86_64",
            ],
         },
         references: [
            {
               category: "self",
               summary: "Canonical URL",
               url: "https://access.redhat.com/security/cve/CVE-2022-28733",
            },
            {
               category: "external",
               summary: "RHBZ#2083339",
               url: "https://bugzilla.redhat.com/show_bug.cgi?id=2083339",
            },
            {
               category: "external",
               summary: "https://www.cve.org/CVERecord?id=CVE-2022-28733",
               url: "https://www.cve.org/CVERecord?id=CVE-2022-28733",
            },
            {
               category: "external",
               summary: "https://nvd.nist.gov/vuln/detail/CVE-2022-28733",
               url: "https://nvd.nist.gov/vuln/detail/CVE-2022-28733",
            },
         ],
         release_date: "2022-06-07T00:00:00+00:00",
         remediations: [
            {
               category: "vendor_fix",
               date: "2022-07-21T12:34:16+00:00",
               details: "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/2974891",
               product_ids: [
                  "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.1-202207170705_8.6.src",
                  "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.1-202207170705_8.6.x86_64",
               ],
               restart_required: {
                  category: "none",
               },
               url: "https://access.redhat.com/errata/RHSA-2022:5678",
            },
         ],
         scores: [
            {
               cvss_v3: {
                  attackComplexity: "HIGH",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 8.1,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.1-202207170705_8.6.src",
                  "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.1-202207170705_8.6.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               details: "Important",
            },
         ],
         title: "grub2: Integer underflow in grub_net_recv_ip4_packets",
      },
   ],
}


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Nomenclature

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