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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        "text": "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.\n\nRed 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.",
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        "text": "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\u0027s resources and performing administrative tasks.\n\nThe 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)\n\nSecurity Fix(es):\n\n* kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)\n\n* grub2: Integer underflow in grub_net_recv_ip4_packets (CVE-2022-28733)\n\nFor 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.\n\nBug Fix(es):\n\n* RHV-H 4.4 SP1 Has been rebased on RHEL 8.6 Batch #1 (BZ#2070869)",
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  "vulnerabilities": [
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      "cwe": {
        "id": "CWE-122",
        "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"
        }
      ],
      "notes": [
        {
          "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\u0027s 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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          "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"
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      ],
      "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"
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        {
          "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\" \u003e /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-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.1-202207170705_8.6.x86_64",
            "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",
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            "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\u0027s 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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