USN-4407-1
- Source
- https://ubuntu.com/security/notices/USN-4407-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4407-1.json
- JSON Data
- https://api.osv.dev/v1/vulns/USN-4407-1
- Upstream
- Related
- Published
- 2020-07-01T23:44:41.765698Z
- Modified
- 2025-10-13T04:35:09Z
- Summary
- libvncserver vulnerabilities
- Details
-
It was discovered that LibVNCServer incorrectly handled decompressing data. An attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service. (CVE-2019-15680)
It was discovered that an information disclosure vulnerability existed in LibVNCServer when sending a ServerCutText message. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. (CVE-2019-15681)
It was discovered that LibVNCServer incorrectly handled cursor shape updates. If a user were tricked in to connecting to a malicious server, an attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. (CVE-2019-15690, CVE-2019-20788)
It was discovered that LibVNCServer incorrectly handled decoding WebSocket frames. An attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. (CVE-2017-18922)
- References
Affected packages
Ubuntu:16.04:LTS / libvncserver
Package
- Name
- libvncserver
- Purl
- pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.4?arch=source&distro=xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.9.10+dfsg-3ubuntu0.16.04.4
Affected versions
0.*
0.9.10+dfsg-3
0.9.10+dfsg-3build1
0.9.10+dfsg-3ubuntu0.16.04.1
0.9.10+dfsg-3ubuntu0.16.04.2
0.9.10+dfsg-3ubuntu0.16.04.3
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4",
"binary_name": "libvncclient1"
},
{
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4",
"binary_name": "libvncserver-config"
},
{
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4",
"binary_name": "libvncserver-dev"
},
{
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.4",
"binary_name": "libvncserver1"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2017-18922"
},
{
"severity": [
{
"score": "CVSS:3.1/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-2019-15680"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2019-15681"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2019-15690"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2019-20788"
}
]
}
}
Ubuntu:18.04:LTS / libvncserver
Package
- Name
- libvncserver
- Purl
- pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.2?arch=source&distro=bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.9.11+dfsg-1ubuntu1.2
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "0.9.11+dfsg-1ubuntu1.2",
"binary_name": "libvncclient1"
},
{
"binary_version": "0.9.11+dfsg-1ubuntu1.2",
"binary_name": "libvncserver-config"
},
{
"binary_version": "0.9.11+dfsg-1ubuntu1.2",
"binary_name": "libvncserver-dev"
},
{
"binary_version": "0.9.11+dfsg-1ubuntu1.2",
"binary_name": "libvncserver1"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2017-18922"
},
{
"severity": [
{
"score": "CVSS:3.1/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-2019-15680"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2019-15681"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2019-15690"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2019-20788"
}
]
}
}
Ubuntu:20.04:LTS / libvncserver
Package
- Name
- libvncserver
- Purl
- pkg:deb/ubuntu/libvncserver@0.9.12+dfsg-9ubuntu0.1?arch=source&distro=focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.9.12+dfsg-9ubuntu0.1
Affected versions
0.*
0.9.11+dfsg-1.3
0.9.12+dfsg-3ubuntu3
0.9.12+dfsg-6
0.9.12+dfsg-7
0.9.12+dfsg-8
0.9.12+dfsg-9
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "0.9.12+dfsg-9ubuntu0.1",
"binary_name": "libvncclient1"
},
{
"binary_version": "0.9.12+dfsg-9ubuntu0.1",
"binary_name": "libvncserver-dev"
},
{
"binary_version": "0.9.12+dfsg-9ubuntu0.1",
"binary_name": "libvncserver1"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2017-18922"
},
{
"severity": [
{
"score": "CVSS:3.1/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-2019-15680"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2019-15690"
}
]
}
}