rhsa-2023_3491
Vulnerability from csaf_redhat
Published
2023-06-06 14:14
Modified
2024-11-22 21:18
Summary
Red Hat Security Advisory: Red Hat Virtualization Host 4.4.z SP 1 security update

Notes

Topic
An update for 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
Security Fix(es): * kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564) * kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378) * samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided (CVE-2022-38023) * kernel: mm/mremap.c use-after-free vulnerability (CVE-2022-41222) * kernel: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461) * openvswitch: ip proto 0 triggers incorrect handling (CVE-2023-1668) 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.
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": "Use After Free"
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      "discovery_date": "2022-10-17T00:00:00+00:00",
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          "text": "2150999"
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      "notes": [
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          "category": "description",
          "text": "A use-after-free flaw was found in the Linux kernel\u2019s L2CAP bluetooth functionality in how a user triggers a race condition by two malicious flows in the L2CAP bluetooth packets. This flaw allows a local or bluetooth connection user to crash the system or potentially escalate privileges.",
          "title": "Vulnerability description"
        },
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          "text": "kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue is rated between Moderate and Important (similar to the CVE-2022-45934) because of no known attack, and the attack would be complex. Anyway, consider this CVE-2022-3564 as Important because the use-after-free can potentially lead to privilege escalation or a potential remote system crash (and currently, a read after-free that in most cases would not lead to a remote system crash).",
          "title": "Statement"
        },
        {
          "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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          "summary": "Canonical URL",
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          "summary": "RHBZ#2150999",
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        {
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-3564",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3564"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=89f9f3cb86b1c63badaf392a83dd661d56cc50b1",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=89f9f3cb86b1c63badaf392a83dd661d56cc50b1"
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      "release_date": "2022-10-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-06-06T14:14:54+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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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2023:3491"
        },
        {
          "category": "workaround",
          "details": "To mitigate these vulnerabilities on the operating system level, disable the Bluetooth functionality via blocklisting kernel modules in the Linux kernel. The kernel modules can be prevented from being loaded by using system-wide modprobe rules. Instructions on how to disable Bluetooth modules are available on the Customer Portal at https://access.redhat.com/solutions/2682931.\n\nAlternatively, Bluetooth can be disabled within the hardware or at BIOS level which will also provide an effective mitigation as the kernel will not be able to detect that Bluetooth hardware is present on the system.",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c"
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    {
      "cve": "CVE-2022-4378",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2022-12-12T00:00:00+00:00",
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        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A stack overflow flaw was found in the Linux kernel\u0027s SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: stack overflow in do_proc_dointvec and proc_skip_spaces",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "To trigger this issue, the user needs some privileges (for example, access to the sysctl files), but usually less than root or CAP_NET_ADMIN.",
          "title": "Statement"
        },
        {
          "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": [
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2022-4378"
        },
        {
          "category": "external",
          "summary": "RHBZ#2152548",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2152548"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-4378",
          "url": "https://www.cve.org/CVERecord?id=CVE-2022-4378"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-4378",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4378"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch"
        },
        {
          "category": "external",
          "summary": "https://seclists.org/oss-sec/2022/q4/178",
          "url": "https://seclists.org/oss-sec/2022/q4/178"
        }
      ],
      "release_date": "2022-12-09T10:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-06-06T14:14:54+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": [
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2023:3491"
        },
        {
          "category": "workaround",
          "details": "A possible workaround is preventing regular users from accessing sysctl files (such as /proc/sys/net/ipv4/tcp_rmem and similar). Also, preventing a user from increasing privileges with commands such as \"unshare -rn\" (that allows obtaining net namespace privileges required to access /proc/sys/net/ipv4/tcp_rmem).",
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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        }
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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: stack overflow in do_proc_dointvec and proc_skip_spaces"
    },
    {
      "cve": "CVE-2022-38023",
      "cwe": {
        "id": "CWE-328",
        "name": "Use of Weak Hash"
      },
      "discovery_date": "2022-12-16T00:00:00+00:00",
      "flags": [
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          "label": "vulnerable_code_not_present",
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      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2154362"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in samba. The Netlogon RPC implementations may use the rc4-hmac encryption algorithm, which is considered weak and should be avoided even if the client supports more modern encryption types. This issue could allow an attacker who knows the plain text content communicated between the samba client and server to craft data with the same MD5 calculation and replace it without being detected.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided",
          "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": {
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2022-38023"
        },
        {
          "category": "external",
          "summary": "RHBZ#2154362",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2154362"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-38023",
          "url": "https://www.cve.org/CVERecord?id=CVE-2022-38023"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-38023",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38023"
        },
        {
          "category": "external",
          "summary": "https://www.samba.org/samba/security/CVE-2022-38023.html",
          "url": "https://www.samba.org/samba/security/CVE-2022-38023.html"
        }
      ],
      "release_date": "2022-12-16T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-06-06T14:14:54+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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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2023:3491"
        },
        {
          "category": "workaround",
          "details": "Users can disable MD5-based NetLogon by adding the following snippet to their smb.conf\n\n~~~\nreject md5 clients = yes \n~~~\n\nin case there\u0027s still need to allow SMB to authenticate to MD5-based NetLogon servers, it\u0027s possible to explicitly\nenable it per-server based:\n\n~~~\n server reject md5 schannel:\u003cSERVERNAME\u003e$ = no\n~~~",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.3-202306050942_8.6.src",
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        }
      ],
      "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"
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "samba: RC4/HMAC-MD5 NetLogon Secure Channel is weak and should be avoided"
    },
    {
      "cve": "CVE-2022-41222",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2022-09-21T00:00:00+00:00",
      "flags": [
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        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2138818"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A use-after-free flaw was found in the Linux kernel\u2019s mm/mremap memory address space accounting source code in how a race condition happens between rmap walk and mremap. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: mm/mremap.c use-after-free vulnerability",
          "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": [
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          "summary": "Canonical URL",
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        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2022-41222",
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        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-41222",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41222"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2"
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          "url": "https://access.redhat.com/errata/RHSA-2023:3491"
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          "details": "Important"
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      ],
      "title": "kernel: mm/mremap.c use-after-free vulnerability"
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    {
      "cve": "CVE-2023-0461",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
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      "discovery_date": "2023-02-23T00:00:00+00:00",
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        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2176192"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A use-after-free flaw was found in the Linux kernel\u2019s TLS protocol functionality in how a user installs a tls context (struct tls_context) on a connected TCP socket. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: net/ulp: use-after-free in listening ULP sockets",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Versions of Red Hat Enterprise Linux before 8 are not affected by this vulnerability as they did not include the upstream commit 734942c (\"tcp: ULP infrastructure\").",
          "title": "Statement"
        },
        {
          "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": {
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        },
        {
          "category": "external",
          "summary": "RHBZ#2176192",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2176192"
        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-0461",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-0461"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-0461",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0461"
        },
        {
          "category": "external",
          "summary": "https://github.com/torvalds/linux/commit/2c02d41d71f90a5168391b6a5f2954112ba2307c",
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        }
      ],
      "release_date": "2023-02-23T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-06-06T14:14:54+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-0:4.5.3-202306050942_8.6.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2023:3491"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, prevent module tls from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.3-202306050942_8.6.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.5.3-7.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.5.3-7.el8ev.noarch"
          ]
        }
      ],
      "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-0:4.5.3-202306050942_8.6.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: net/ulp: use-after-free in listening ULP sockets"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "David Marchand"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2023-1668",
      "cwe": {
        "id": "CWE-670",
        "name": "Always-Incorrect Control Flow Implementation"
      },
      "discovery_date": "2022-10-25T00:00:00+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.5.3-7.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.5.3-7.el8ev.noarch"
          ]
        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2137666"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow, but with an incorrect action, possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openvswitch: ip proto 0 triggers incorrect handling",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "In OpenShift Container Platform (OCP) the openvswitch rpm package is consumed from the RHEL Fast Datapath repositories, hence OCP openvswitch components are marked as \"Will not fix\".",
          "title": "Statement"
        },
        {
          "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-0:4.5.3-202306050942_8.6.src",
          "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64"
        ],
        "known_not_affected": [
          "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.src",
          "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.x86_64",
          "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.5.3-7.el8ev.x86_64",
          "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.5.3-7.el8ev.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-1668"
        },
        {
          "category": "external",
          "summary": "RHBZ#2137666",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2137666"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-1668",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-1668"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-1668",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1668"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2023/04/06/1",
          "url": "https://www.openwall.com/lists/oss-security/2023/04/06/1"
        }
      ],
      "release_date": "2023-04-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-06-06T14:14:54+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-0:4.5.3-202306050942_8.6.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2023:3491"
        },
        {
          "category": "workaround",
          "details": "For any version of Open vSwitch, preventing packets with network\nprotocol number \u00270\u0027 from reaching Open vSwitch will prevent the issue.\nThis is difficult to achieve because Open vSwitch obtains packets before\nthe iptables or nftables host firewall, so iptables or nftables on the\nOpen vSwitch host cannot ordinarily block the vulnerability.\n\nAnother method would be to add a high priority flow to the flow table\nexplicitly matching on nw protocol \u00270\u0027 and handling that traffic\nseparately:\n\n   table=0 priority=32768,ip,ip_proto=0 actions=drop\n\nThis would need to be similarly done for IPv6 traffic as well.",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.3-202306050942_8.6.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.5.3-7.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.5.3-7.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.5.3-7.el8ev.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.5.3-202306050942_8.6.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.5.3-202306050942_8.6.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openvswitch: ip proto 0 triggers incorrect handling"
    }
  ]
}


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