usn-4725-1
Vulnerability from osv_ubuntu
Published
2021-02-08 13:12
Modified
2026-04-27 14:11
Summary
qemu vulnerabilities
Details

It was discovered that QEMU incorrectly handled memory in iSCSI emulation. An attacker inside the guest could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-11947)

Alexander Bulekov discovered that QEMU incorrectly handled Intel e1000e emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-15859)

Alexander Bulekov discovered that QEMU incorrectly handled memory region cache. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-27821)

Cheol-woo Myung discovered that QEMU incorrectly handled Intel e1000e emulation. An attacker inside the guest could use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-28916)

Wenxiang Qian discovered that QEMU incorrectly handled ATAPI emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-29443)

It was discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2021-20181)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11947",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-15859",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-29443",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-20181",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-kvm",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-aarch64",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "1:2.5+dfsg-5ubuntu10.49"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@1:2.5+dfsg-5ubuntu10.49?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.5+dfsg-5ubuntu10.49"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.3+dfsg-5ubuntu9",
        "1:2.3+dfsg-5ubuntu10",
        "1:2.4+dfsg-4ubuntu1",
        "1:2.4+dfsg-4ubuntu2",
        "1:2.4+dfsg-4ubuntu3",
        "1:2.4+dfsg-5ubuntu3",
        "1:2.5+dfsg-1ubuntu2",
        "1:2.5+dfsg-1ubuntu3",
        "1:2.5+dfsg-1ubuntu4",
        "1:2.5+dfsg-1ubuntu5",
        "1:2.5+dfsg-5ubuntu1",
        "1:2.5+dfsg-5ubuntu2",
        "1:2.5+dfsg-5ubuntu4",
        "1:2.5+dfsg-5ubuntu6",
        "1:2.5+dfsg-5ubuntu7",
        "1:2.5+dfsg-5ubuntu10",
        "1:2.5+dfsg-5ubuntu10.1",
        "1:2.5+dfsg-5ubuntu10.2",
        "1:2.5+dfsg-5ubuntu10.3",
        "1:2.5+dfsg-5ubuntu10.4",
        "1:2.5+dfsg-5ubuntu10.5",
        "1:2.5+dfsg-5ubuntu10.6",
        "1:2.5+dfsg-5ubuntu10.7",
        "1:2.5+dfsg-5ubuntu10.8",
        "1:2.5+dfsg-5ubuntu10.9",
        "1:2.5+dfsg-5ubuntu10.10",
        "1:2.5+dfsg-5ubuntu10.11",
        "1:2.5+dfsg-5ubuntu10.13",
        "1:2.5+dfsg-5ubuntu10.14",
        "1:2.5+dfsg-5ubuntu10.15",
        "1:2.5+dfsg-5ubuntu10.16",
        "1:2.5+dfsg-5ubuntu10.20",
        "1:2.5+dfsg-5ubuntu10.21",
        "1:2.5+dfsg-5ubuntu10.22",
        "1:2.5+dfsg-5ubuntu10.24",
        "1:2.5+dfsg-5ubuntu10.25",
        "1:2.5+dfsg-5ubuntu10.26",
        "1:2.5+dfsg-5ubuntu10.28",
        "1:2.5+dfsg-5ubuntu10.29",
        "1:2.5+dfsg-5ubuntu10.30",
        "1:2.5+dfsg-5ubuntu10.31",
        "1:2.5+dfsg-5ubuntu10.32",
        "1:2.5+dfsg-5ubuntu10.33",
        "1:2.5+dfsg-5ubuntu10.34",
        "1:2.5+dfsg-5ubuntu10.35",
        "1:2.5+dfsg-5ubuntu10.36",
        "1:2.5+dfsg-5ubuntu10.37",
        "1:2.5+dfsg-5ubuntu10.38",
        "1:2.5+dfsg-5ubuntu10.39",
        "1:2.5+dfsg-5ubuntu10.40",
        "1:2.5+dfsg-5ubuntu10.41",
        "1:2.5+dfsg-5ubuntu10.42",
        "1:2.5+dfsg-5ubuntu10.43",
        "1:2.5+dfsg-5ubuntu10.44",
        "1:2.5+dfsg-5ubuntu10.45",
        "1:2.5+dfsg-5ubuntu10.46",
        "1:2.5+dfsg-5ubuntu10.47",
        "1:2.5+dfsg-5ubuntu10.48"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11947",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-15859",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28916",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-29443",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-20181",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-kvm",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "1:2.11+dfsg-1ubuntu7.35"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@1:2.11+dfsg-1ubuntu7.35?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.11+dfsg-1ubuntu7.35"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.10+dfsg-0ubuntu3",
        "1:2.10+dfsg-0ubuntu4",
        "1:2.10+dfsg-0ubuntu5",
        "1:2.11+dfsg-1ubuntu1",
        "1:2.11+dfsg-1ubuntu2",
        "1:2.11+dfsg-1ubuntu4",
        "1:2.11+dfsg-1ubuntu5",
        "1:2.11+dfsg-1ubuntu6",
        "1:2.11+dfsg-1ubuntu7",
        "1:2.11+dfsg-1ubuntu7.1",
        "1:2.11+dfsg-1ubuntu7.2",
        "1:2.11+dfsg-1ubuntu7.3",
        "1:2.11+dfsg-1ubuntu7.4",
        "1:2.11+dfsg-1ubuntu7.5",
        "1:2.11+dfsg-1ubuntu7.6",
        "1:2.11+dfsg-1ubuntu7.7",
        "1:2.11+dfsg-1ubuntu7.8",
        "1:2.11+dfsg-1ubuntu7.9",
        "1:2.11+dfsg-1ubuntu7.10",
        "1:2.11+dfsg-1ubuntu7.12",
        "1:2.11+dfsg-1ubuntu7.13",
        "1:2.11+dfsg-1ubuntu7.14",
        "1:2.11+dfsg-1ubuntu7.15",
        "1:2.11+dfsg-1ubuntu7.17",
        "1:2.11+dfsg-1ubuntu7.18",
        "1:2.11+dfsg-1ubuntu7.19",
        "1:2.11+dfsg-1ubuntu7.20",
        "1:2.11+dfsg-1ubuntu7.21",
        "1:2.11+dfsg-1ubuntu7.22",
        "1:2.11+dfsg-1ubuntu7.23",
        "1:2.11+dfsg-1ubuntu7.25",
        "1:2.11+dfsg-1ubuntu7.26",
        "1:2.11+dfsg-1ubuntu7.27",
        "1:2.11+dfsg-1ubuntu7.28",
        "1:2.11+dfsg-1ubuntu7.29",
        "1:2.11+dfsg-1ubuntu7.31",
        "1:2.11+dfsg-1ubuntu7.32",
        "1:2.11+dfsg-1ubuntu7.33",
        "1:2.11+dfsg-1ubuntu7.34"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11947",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-15859",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27821",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28916",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-29443",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-20181",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-kvm",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-data",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "1:4.2-3ubuntu6.12"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "1:4.2-3ubuntu6.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.12?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.2-3ubuntu6.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.0+dfsg-0ubuntu9",
        "1:4.0+dfsg-0ubuntu10",
        "1:4.2-1ubuntu1",
        "1:4.2-1ubuntu2",
        "1:4.2-3ubuntu1",
        "1:4.2-3ubuntu2",
        "1:4.2-3ubuntu3",
        "1:4.2-3ubuntu4",
        "1:4.2-3ubuntu5",
        "1:4.2-3ubuntu6",
        "1:4.2-3ubuntu6.1",
        "1:4.2-3ubuntu6.2",
        "1:4.2-3ubuntu6.3",
        "1:4.2-3ubuntu6.4",
        "1:4.2-3ubuntu6.5",
        "1:4.2-3ubuntu6.6",
        "1:4.2-3ubuntu6.7",
        "1:4.2-3ubuntu6.8",
        "1:4.2-3ubuntu6.9",
        "1:4.2-3ubuntu6.10",
        "1:4.2-3ubuntu6.11"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that QEMU incorrectly handled memory in iSCSI emulation.\nAn attacker inside the guest could possibly use this issue to obtain\nsensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu\n18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-11947)\n\nAlexander Bulekov discovered that QEMU incorrectly handled Intel e1000e\nemulation. An attacker inside the guest could use this issue to cause QEMU\nto crash, resulting in a denial of service. (CVE-2020-15859)\n\nAlexander Bulekov discovered that QEMU incorrectly handled memory region\ncache. An attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service. This issue only affected Ubuntu\n20.04 LTS, and Ubuntu 20.10. (CVE-2020-27821)\n\nCheol-woo Myung discovered that QEMU incorrectly handled Intel e1000e\nemulation. An attacker inside the guest could use this issue to cause a\ndenial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04\nLTS, and Ubuntu 20.10. (CVE-2020-28916)\n\nWenxiang Qian discovered that QEMU incorrectly handled ATAPI emulation. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. (CVE-2020-29443)\n\nIt was discovered that QEMU incorrectly handled VirtFS directory sharing.\nAn attacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. (CVE-2021-20181)\n",
  "id": "USN-4725-1",
  "modified": "2026-04-27T14:11:26Z",
  "published": "2021-02-08T13:12:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4725-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11947"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-15859"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27821"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-28916"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-29443"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-20181"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "qemu vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-11947",
    "UBUNTU-CVE-2020-15859",
    "UBUNTU-CVE-2020-27821",
    "UBUNTU-CVE-2020-28916",
    "UBUNTU-CVE-2020-29443",
    "UBUNTU-CVE-2021-20181"
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.