ubuntu-cve-2016-9942
Vulnerability from osv_ubuntu
Published
2016-12-31 00:00
Modified
2026-04-22 07:38
Summary
Details
Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.
Severity
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libvncserver-config",
"binary_version": "0.9.9+dfsg-1ubuntu1.2"
},
{
"binary_name": "libvncserver0",
"binary_version": "0.9.9+dfsg-1ubuntu1.2"
},
{
"binary_name": "linuxvnc",
"binary_version": "0.9.9+dfsg-1ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "libvncserver",
"purl": "pkg:deb/ubuntu/libvncserver@0.9.9+dfsg-1ubuntu1.2?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.9+dfsg-1ubuntu1.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.9.9+dfsg-1",
"0.9.9+dfsg-1ubuntu1",
"0.9.9+dfsg-1ubuntu1.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "italc-client",
"binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
},
{
"binary_name": "italc-management-console",
"binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
},
{
"binary_name": "italc-master",
"binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
},
{
"binary_name": "libitalccore",
"binary_version": "1:2.0.2+dfsg1-4ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "italc",
"purl": "pkg:deb/ubuntu/italc@1:2.0.2+dfsg1-4ubuntu0.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.0.2+dfsg1-4ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:2.0.2+dfsg1-3",
"1:2.0.2+dfsg1-4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libvncclient1",
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.1"
},
{
"binary_name": "libvncserver-config",
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.1"
},
{
"binary_name": "libvncserver1",
"binary_version": "0.9.10+dfsg-3ubuntu0.16.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "libvncserver",
"purl": "pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.10+dfsg-3ubuntu0.16.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.9.10+dfsg-3",
"0.9.10+dfsg-3build1"
]
}
],
"aliases": [],
"details": "Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.",
"id": "UBUNTU-CVE-2016-9942",
"modified": "2026-04-22T07:38:05Z",
"published": "2016-12-31T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-9942"
},
{
"type": "REPORT",
"url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3171-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2016-9942"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4587-1"
}
],
"related": [
"USN-3171-1",
"USN-4587-1"
],
"schema_version": "1.7.0",
"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": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2016-9942"
]
}
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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.
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