Vulnerability-Lookup

ubuntu-cve-2019-3840

Vulnerability from osv_ubuntu

Published

2019-02-27 00:00

Modified

2026-04-22 07:38

Summary

Details

A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.

Severity

6.3 (Medium)


                    
                      CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

5.8 (Medium)


                    
                      CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2019-3840	REPORT
	https://www.redhat.com/archives/libvir-list/2019-…	REPORT
	https://ubuntu.com/security/notices/USN-3909-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2019-3840	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvirt-bin",
            "binary_version": "1.3.1-1ubuntu10.25"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "1.3.1-1ubuntu10.25"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@1.3.1-1ubuntu10.25?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.1-1ubuntu10.25"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.16-2ubuntu11",
        "1.2.16-2ubuntu12",
        "1.2.16-2ubuntu13",
        "1.2.16-2ubuntu14",
        "1.2.21-2ubuntu1",
        "1.2.21-2ubuntu3",
        "1.2.21-2ubuntu4",
        "1.2.21-2ubuntu5",
        "1.2.21-2ubuntu7",
        "1.2.21-2ubuntu8",
        "1.2.21-2ubuntu9",
        "1.2.21-2ubuntu10",
        "1.3.1-1ubuntu1",
        "1.3.1-1ubuntu2",
        "1.3.1-1ubuntu3",
        "1.3.1-1ubuntu4",
        "1.3.1-1ubuntu6",
        "1.3.1-1ubuntu9",
        "1.3.1-1ubuntu10",
        "1.3.1-1ubuntu10.1",
        "1.3.1-1ubuntu10.2",
        "1.3.1-1ubuntu10.3",
        "1.3.1-1ubuntu10.5",
        "1.3.1-1ubuntu10.6",
        "1.3.1-1ubuntu10.7",
        "1.3.1-1ubuntu10.8",
        "1.3.1-1ubuntu10.10",
        "1.3.1-1ubuntu10.11",
        "1.3.1-1ubuntu10.12",
        "1.3.1-1ubuntu10.13",
        "1.3.1-1ubuntu10.14",
        "1.3.1-1ubuntu10.15",
        "1.3.1-1ubuntu10.17",
        "1.3.1-1ubuntu10.18",
        "1.3.1-1ubuntu10.19",
        "1.3.1-1ubuntu10.21",
        "1.3.1-1ubuntu10.22",
        "1.3.1-1ubuntu10.23",
        "1.3.1-1ubuntu10.24"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-libvirt",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-bin",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-clients",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-sheepdog",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-sanlock",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-wireshark",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "4.0.0-1ubuntu8.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@4.0.0-1ubuntu8.8?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-1ubuntu8.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0-1ubuntu5",
        "3.6.0-1ubuntu6",
        "4.0.0-1ubuntu1",
        "4.0.0-1ubuntu2",
        "4.0.0-1ubuntu3",
        "4.0.0-1ubuntu4",
        "4.0.0-1ubuntu5",
        "4.0.0-1ubuntu6",
        "4.0.0-1ubuntu7",
        "4.0.0-1ubuntu8",
        "4.0.0-1ubuntu8.1",
        "4.0.0-1ubuntu8.2",
        "4.0.0-1ubuntu8.3",
        "4.0.0-1ubuntu8.4",
        "4.0.0-1ubuntu8.5",
        "4.0.0-1ubuntu8.6",
        "4.0.0-1ubuntu8.7"
      ]
    }
  ],
  "aliases": [],
  "details": "A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.",
  "id": "UBUNTU-CVE-2019-3840",
  "modified": "2026-04-22T07:38:52Z",
  "published": "2019-02-27T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3840"
    },
    {
      "type": "REPORT",
      "url": "https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3909-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-3840"
    }
  ],
  "related": [
    "USN-3909-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-3840"
  ]
}

CVE-2019-3840 (GCVE-0-2019-3840)

Vulnerability from cvelistv5 – Published: 2019-03-27 12:24 – Updated: 2024-08-04 19:19

Summary

Severity

5.8 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H

CWE

CWE-476

Assigner

redhat

References

7 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1663051	x_refsource_CONFIRM
https://www.redhat.com/archives/libvir-list/2019-…	x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://access.redhat.com/errata/RHSA-2019:2294	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
The libvirt Project	libvirt	Affected: 5.0.0

Show details on NVD website

JSON

To clipboard

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}

usn-3909-1

Vulnerability from osv_ubuntu

Published

2019-03-14 17:53

Modified

2026-04-22 07:36

Summary

libvirt vulnerability

Details

It was discovered that libvirt incorrectly handled waiting for certain agent events. An attacker inside a guest could possibly use this issue to cause libvirtd to stop responding, resulting in a denial of service.

References

URL

Type

	https://ubuntu.com/security/notices/USN-3909-1	ADVISORY
	https://ubuntu.com/security/CVE-2019-3840	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-3840",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvirt-bin",
            "binary_version": "1.3.1-1ubuntu10.25"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "1.3.1-1ubuntu10.25"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@1.3.1-1ubuntu10.25?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
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            {
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            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.16-2ubuntu11",
        "1.2.16-2ubuntu12",
        "1.2.16-2ubuntu13",
        "1.2.16-2ubuntu14",
        "1.2.21-2ubuntu1",
        "1.2.21-2ubuntu3",
        "1.2.21-2ubuntu4",
        "1.2.21-2ubuntu5",
        "1.2.21-2ubuntu7",
        "1.2.21-2ubuntu8",
        "1.2.21-2ubuntu9",
        "1.2.21-2ubuntu10",
        "1.3.1-1ubuntu1",
        "1.3.1-1ubuntu2",
        "1.3.1-1ubuntu3",
        "1.3.1-1ubuntu4",
        "1.3.1-1ubuntu6",
        "1.3.1-1ubuntu9",
        "1.3.1-1ubuntu10",
        "1.3.1-1ubuntu10.1",
        "1.3.1-1ubuntu10.2",
        "1.3.1-1ubuntu10.3",
        "1.3.1-1ubuntu10.5",
        "1.3.1-1ubuntu10.6",
        "1.3.1-1ubuntu10.7",
        "1.3.1-1ubuntu10.8",
        "1.3.1-1ubuntu10.10",
        "1.3.1-1ubuntu10.11",
        "1.3.1-1ubuntu10.12",
        "1.3.1-1ubuntu10.13",
        "1.3.1-1ubuntu10.14",
        "1.3.1-1ubuntu10.15",
        "1.3.1-1ubuntu10.17",
        "1.3.1-1ubuntu10.18",
        "1.3.1-1ubuntu10.19",
        "1.3.1-1ubuntu10.21",
        "1.3.1-1ubuntu10.22",
        "1.3.1-1ubuntu10.23",
        "1.3.1-1ubuntu10.24"
      ]
    },
    {
      "database_specific": {
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          "cves": [
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              "id": "CVE-2019-3840",
              "severity": [
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                  "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
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                {
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                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-libvirt",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-bin",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-clients",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-gluster",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-rbd",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-sheepdog",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-driver-storage-zfs",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-daemon-system",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-sanlock",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt-wireshark",
            "binary_version": "4.0.0-1ubuntu8.8"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "4.0.0-1ubuntu8.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@4.0.0-1ubuntu8.8?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-1ubuntu8.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0-1ubuntu5",
        "3.6.0-1ubuntu6",
        "4.0.0-1ubuntu1",
        "4.0.0-1ubuntu2",
        "4.0.0-1ubuntu3",
        "4.0.0-1ubuntu4",
        "4.0.0-1ubuntu5",
        "4.0.0-1ubuntu6",
        "4.0.0-1ubuntu7",
        "4.0.0-1ubuntu8",
        "4.0.0-1ubuntu8.1",
        "4.0.0-1ubuntu8.2",
        "4.0.0-1ubuntu8.3",
        "4.0.0-1ubuntu8.4",
        "4.0.0-1ubuntu8.5",
        "4.0.0-1ubuntu8.6",
        "4.0.0-1ubuntu8.7"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libvirt incorrectly handled waiting for certain\nagent events. An attacker inside a guest could possibly use this issue to\ncause libvirtd to stop responding, resulting in a denial of service.\n",
  "id": "USN-3909-1",
  "modified": "2026-04-22T07:36:36Z",
  "published": "2019-03-14T17:53:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3909-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-3840"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libvirt vulnerability",
  "upstream": [
    "UBUNTU-CVE-2019-3840"
  ]
}

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.

Action not permitted

ubuntu-cve-2019-3840

Vulnerability from osv_ubuntu

CVE-2019-3840 (GCVE-0-2019-3840)

usn-3909-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature