CVE-2019-20788
- Source
- https://cve.org/CVERecord?id=CVE-2019-20788
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20788.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2019-20788
- Downstream
- Related
- Published
- 2020-04-23T19:15:12.763Z
- Modified
- 2026-03-14T04:43:02.982159Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.
- References
-
- https://usn.ubuntu.com/4407-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed
- https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient
Affected packages
Git / github.com/libvnc/libvncserver
Affected versions
LibVNCServer-0.*
LibVNCServer-0.9.10
LibVNCServer-0.9.11
LibVNCServer-0.9.12
LibVNCServer-0.9.8
LibVNCServer-0.9.9
Other
X11VNC_0_9_10
X11VNC_0_9_11
X11VNC_0_9_12
X11VNC_0_9_7
X11VNC_0_9_8
X11VNC_0_9_9
X11VNC_REL_0_9_4
X11VNC_REL_0_9_5
X11VNC_REL_0_9_6
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "14.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "16.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.04"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.10"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
},
{
"events": [
{
"introduced": "3.0.0.0"
},
{
"fixed": "3.2.1.0"
}
]
},
{
"events": [
{
"introduced": "3.0.0.0"
},
{
"fixed": "3.2.1.0"
}
]
},
{
"events": [
{
"introduced": "3.0.0.0"
},
{
"fixed": "3.2.1.0"
}
]
},
{
"events": [
{
"introduced": "3.0.0.0"
},
{
"fixed": "3.2.1.0"
}
]
},
{
"events": [
{
"introduced": "3.0.0.0"
},
{
"fixed": "3.2.1.0"
}
]
},
{
"events": [
{
"introduced": "3.0.0.0"
},
{
"fixed": "3.2.1.0"
}
]
}
]
vanir_signatures
[
{
"signature_type": "Function",
"deprecated": false,
"id": "CVE-2019-20788-189abd97",
"target": {
"file": "libvncclient/cursor.c",
"function": "HandleCursorShape"
},
"digest": {
"length": 2878.0,
"function_hash": "166509097659370788785687778228924176187"
},
"signature_version": "v1",
"source": "https://github.com/libvnc/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed"
},
{
"signature_type": "Line",
"deprecated": false,
"id": "CVE-2019-20788-36246abd",
"target": {
"file": "libvncclient/cursor.c"
},
"digest": {
"threshold": 0.9,
"line_hashes": [
"102057262279662452688778988803141241357",
"175955773102106351237323041340518821685",
"240545567691954465949188256110399956644",
"204796747639085440341262894639991613085"
]
},
"signature_version": "v1",
"source": "https://github.com/libvnc/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed"
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20788.json"