usn-3576-1
Vulnerability from osv_ubuntu
Published
2018-02-20 19:20
Modified
2026-04-22 07:36
Summary
libvirt vulnerabilities
Details
Vivian Zhang and Christoph Anton Mitterer discovered that libvirt incorrectly disabled password authentication when the VNC password was set to an empty string. A remote attacker could possibly use this issue to bypass authentication, contrary to expectations. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5008)
Daniel P. Berrange discovered that libvirt incorrectly handled validating SSL/TLS certificates. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 17.10. (CVE-2017-1000256)
Daniel P. Berrange and Peter Krempa discovered that libvirt incorrectly handled large QEMU replies. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. (CVE-2018-5748)
Pedro Sampaio discovered that libvirt incorrectly handled the libnss_dns.so module. An attacker in a libvirt_lxc session could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-6764)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2016-5008",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-5748",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libvirt-bin",
"binary_version": "1.2.2-0ubuntu13.1.26"
},
{
"binary_name": "libvirt0",
"binary_version": "1.2.2-0ubuntu13.1.26"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "libvirt",
"purl": "pkg:deb/ubuntu/libvirt@1.2.2-0ubuntu13.1.26?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.2-0ubuntu13.1.26"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.1-0ubuntu8",
"1.1.1-0ubuntu9",
"1.1.4-0ubuntu2",
"1.1.4-0ubuntu3",
"1.1.4-0ubuntu4",
"1.1.4-0ubuntu5",
"1.2.0-0ubuntu1",
"1.2.0-0ubuntu2",
"1.2.0-0ubuntu3",
"1.2.1-0ubuntu1",
"1.2.1-0ubuntu2",
"1.2.1-0ubuntu3",
"1.2.1-0ubuntu4",
"1.2.1-0ubuntu5",
"1.2.1-0ubuntu7",
"1.2.1-0ubuntu8",
"1.2.1-0ubuntu9",
"1.2.1-0ubuntu10",
"1.2.2-0ubuntu1",
"1.2.2-0ubuntu2",
"1.2.2-0ubuntu3",
"1.2.2-0ubuntu4",
"1.2.2-0ubuntu5",
"1.2.2-0ubuntu6",
"1.2.2-0ubuntu7",
"1.2.2-0ubuntu8",
"1.2.2-0ubuntu9",
"1.2.2-0ubuntu10",
"1.2.2-0ubuntu11",
"1.2.2-0ubuntu12",
"1.2.2-0ubuntu13",
"1.2.2-0ubuntu13.1",
"1.2.2-0ubuntu13.1.1",
"1.2.2-0ubuntu13.1.2",
"1.2.2-0ubuntu13.1.4",
"1.2.2-0ubuntu13.1.5",
"1.2.2-0ubuntu13.1.6",
"1.2.2-0ubuntu13.1.7",
"1.2.2-0ubuntu13.1.8",
"1.2.2-0ubuntu13.1.9",
"1.2.2-0ubuntu13.1.10",
"1.2.2-0ubuntu13.1.12",
"1.2.2-0ubuntu13.1.14",
"1.2.2-0ubuntu13.1.16",
"1.2.2-0ubuntu13.1.17",
"1.2.2-0ubuntu13.1.20",
"1.2.2-0ubuntu13.1.21",
"1.2.2-0ubuntu13.1.22",
"1.2.2-0ubuntu13.1.23",
"1.2.2-0ubuntu13.1.25"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2016-5008",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-5748",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-6764",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libvirt-bin",
"binary_version": "1.3.1-1ubuntu10.19"
},
{
"binary_name": "libvirt0",
"binary_version": "1.3.1-1ubuntu10.19"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "libvirt",
"purl": "pkg:deb/ubuntu/libvirt@1.3.1-1ubuntu10.19?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.1-1ubuntu10.19"
}
],
"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"
]
}
],
"aliases": [],
"details": "Vivian Zhang and Christoph Anton Mitterer discovered that libvirt\nincorrectly disabled password authentication when the VNC password was set\nto an empty string. A remote attacker could possibly use this issue to\nbypass authentication, contrary to expectations. This issue only affected\nUbuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5008)\n\nDaniel P. Berrange discovered that libvirt incorrectly handled validating\nSSL/TLS certificates. A remote attacker could possibly use this issue to\nobtain sensitive information. This issue only affected Ubuntu 17.10.\n(CVE-2017-1000256)\n\nDaniel P. Berrange and Peter Krempa discovered that libvirt incorrectly\nhandled large QEMU replies. An attacker could possibly use this issue to\ncause libvirt to crash, resulting in a denial of service. (CVE-2018-5748)\n\nPedro Sampaio discovered that libvirt incorrectly handled the libnss_dns.so\nmodule. An attacker in a libvirt_lxc session could possibly use this issue\nto execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and\nUbuntu 17.10. (CVE-2018-6764)\n",
"id": "USN-3576-1",
"modified": "2026-04-22T07:36:35Z",
"published": "2018-02-20T19:20:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3576-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-5008"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2017-1000256"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-5748"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-6764"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "libvirt vulnerabilities",
"upstream": [
"UBUNTU-CVE-2016-5008",
"UBUNTU-CVE-2017-1000256",
"UBUNTU-CVE-2018-5748",
"UBUNTU-CVE-2018-6764"
]
}
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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.
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