rhsa-2021_2522
Vulnerability from csaf_redhat
Published
2021-06-22 14:57
Modified
2024-11-22 17:05
Summary
Red Hat Security Advisory: Red Hat Virtualization Host security update [ovirt-4.4.6]

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 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 ovirt-node-ng 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): * glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits (CVE-2021-27219) * kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501) * polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync() (CVE-2021-3560) * hw: vt-d related privilege escalation (CVE-2020-24489) 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): * Previously, systemtap dependencies were not included in the RHV-H channel. Therefore, systemtap could not be installed. In this release, the systemtap dependencies have been included in the channel, resolving the issue. (BZ#1903997)
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 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 ovirt-node-ng 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\nSecurity Fix(es):\n\n* glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits (CVE-2021-27219)\n\n* kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu-\u003erun (CVE-2021-3501)\n\n* polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync() (CVE-2021-3560)\n\n* hw: vt-d related privilege escalation (CVE-2020-24489)\n\nFor 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.\n\nBug Fix(es):\n\n* Previously, systemtap dependencies were not included in the RHV-H channel. Therefore, systemtap could not be installed.\nIn this release, the systemtap dependencies have been included in the channel, resolving the issue. (BZ#1903997)",
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          "text": "A flaw was found in Intel\u00ae VT-d products. Entries from the context cache on some types of context cache invalidations may not be properly invalidated which may allow an authenticated user to potentially enable escalation of privilege via local access. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
          "title": "Vulnerability description"
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          "text": "hw: vt-d related privilege escalation",
          "title": "Vulnerability summary"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-24489",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-24489"
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      "release_date": "2021-06-08T17:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-06-22T14:57:03+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
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          "cvss_v3": {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
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          ]
        }
      ],
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        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "hw: vt-d related privilege escalation"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Reiji Watanabe"
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          "organization": "Google"
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        "name": "Out-of-bounds Write"
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        }
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu-\u003erun",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affected Linux kernel versions as shipped with Red Hat Enterprise Linux 8 starting with RHEL-8.4.0 and onward kernel version.",
          "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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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-3501"
        },
        {
          "category": "external",
          "summary": "RHBZ#1950136",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1950136"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-3501",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-3501"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3501",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3501"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a"
        }
      ],
      "release_date": "2021-04-13T09:30:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-06-22T14:57:03+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, 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-2021:2522"
        },
        {
          "category": "workaround",
          "details": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64",
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          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu-\u003erun"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Kevin Backhouse"
          ],
          "organization": "GitHub Security Lab"
        }
      ],
      "cve": "CVE-2021-3560",
      "cwe": {
        "id": "CWE-754",
        "name": "Improper Check for Unusual or Exceptional Conditions"
      },
      "discovery_date": "2021-05-18T00:00:00+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch"
          ]
        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1961710"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()",
          "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-0:4.4.6-20210615.0.el8_4.src",
          "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
        ],
        "known_not_affected": [
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          "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64",
          "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-3560"
        },
        {
          "category": "external",
          "summary": "RHBZ#1961710",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-3560",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-3560"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3560",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3560"
        },
        {
          "category": "external",
          "summary": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/",
          "url": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/"
        },
        {
          "category": "external",
          "summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
          "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        }
      ],
      "release_date": "2021-06-03T06:55:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-06-22T14:57:03+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2522"
        },
        {
          "category": "workaround",
          "details": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.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-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "exploit_status",
          "date": "2023-05-12T00:00:00+00:00",
          "details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        },
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "polkit: local privilege escalation using polkit_system_bus_name_get_creds_sync()"
    },
    {
      "cve": "CVE-2021-27219",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2021-02-14T00:00:00+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch"
          ]
        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1929858"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An integer wraparound was discovered in glib due to passing a 64 bit sized value to function g_memdup() which accepts a 32 bits number as argument. An attacker may abuse this flaw when an application linked against the glib library uses g_bytes_new() function or possibly other functions that use g_memdup() underneath and accept a 64 bits argument as size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Applications that just use GBytes to access the data are affected by this flaw but the highest threat is to data confidentiality and/or the application availability, due to possible out-of-bounds reads. However, if the data in GBytes is taken through functions such as g_bytes_unref_to_data or g_bytes_unref_to_array it might be possible to have out-of-bounds writes due to the wrongly reported size of the buffer.\n\nApplications that use g_memdup to duplicate memory with user-controlled sizes should pay extra attention to the fact that g_memdup accepts a guint size instead of gsize. Thus directly passing a gsize value to g_memdup may results in integer truncation, allocating a buffer smaller than expected.",
          "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-0:4.4.6-20210615.0.el8_4.src",
          "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
        ],
        "known_not_affected": [
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          "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.6-2.el8ev.x86_64",
          "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.6-2.el8ev.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-27219"
        },
        {
          "category": "external",
          "summary": "RHBZ#1929858",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1929858"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-27219",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-27219"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-27219",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27219"
        }
      ],
      "release_date": "2021-02-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-06-22T14:57:03+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
          "product_ids": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2522"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.6-20210615.0.el8_4.src",
            "8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.6-20210615.0.el8_4.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "glib: integer overflow in g_bytes_new function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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