{
  "threat_severity" : "Low",
  "public_date" : "2021-04-13T00:00:00Z",
  "bugzilla" : {
    "description" : "libvirt: Insecure sVirt label generation",
    "id" : "1977726",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1977726"
  },
  "cvss3" : {
    "cvss3_base_score" : "3.0",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-732",
  "details" : [ "A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.", "A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity." ],
  "statement" : "This flaw affects all versions of `libvirt` as shipped with Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 8 Advanced Virtualization. A future update may address this issue.",
  "affected_release" : [ {
    "product_name" : "Advanced Virtualization for RHEL 8.2.1",
    "release_date" : "2021-09-30T00:00:00Z",
    "advisory" : "RHSA-2021:3704",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8.2::el8",
    "package" : "virt:8.2-8020120210917153657.863bb0db"
  }, {
    "product_name" : "Advanced Virtualization for RHEL 8.2.1",
    "release_date" : "2021-09-30T00:00:00Z",
    "advisory" : "RHSA-2021:3704",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8.2::el8",
    "package" : "virt-devel:8.2-8020120210917153657.863bb0db"
  }, {
    "product_name" : "Advanced Virtualization for RHEL 8.4.0.Z",
    "release_date" : "2021-09-30T00:00:00Z",
    "advisory" : "RHSA-2021:3703",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8.4::el8",
    "package" : "virt:av-8040020210922084349.522a0ee4"
  }, {
    "product_name" : "Advanced Virtualization for RHEL 8.4.0.Z",
    "release_date" : "2021-09-30T00:00:00Z",
    "advisory" : "RHSA-2021:3703",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8.4::el8",
    "package" : "virt-devel:av-8040020210922084349.522a0ee4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-11-09T00:00:00Z",
    "advisory" : "RHSA-2021:4191",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "virt-devel:rhel-8050020211001230723.b4937e53"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-11-09T00:00:00Z",
    "advisory" : "RHSA-2021:4191",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "virt:rhel-8050020211001230723.b4937e53"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "libvirt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "libvirt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "fix_state" : "Affected",
    "package_name" : "virt:8.2/libvirt",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8::el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "fix_state" : "Fix deferred",
    "package_name" : "virt:8.3/libvirt",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8::el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8 Advanced Virtualization",
    "fix_state" : "Affected",
    "package_name" : "virt:av/libvirt",
    "cpe" : "cpe:/a:redhat:advanced_virtualization:8::el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "libvirt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2021-3631\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3631" ],
  "name" : "CVE-2021-3631",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}