CVE-2019-20839
- Source
- https://cve.org/CVERecord?id=CVE-2019-20839
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20839.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2019-20839
- Downstream
MGASA (1)
openSUSE (4)
RHSA (1)
RLSA (1)
UBUNTU (1)
- Related
- Published
- 2020-06-17T16:15:11Z
- Modified
- 2026-08-07T15:19:00Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.
- Database specific
{ "unresolved_ranges": [ { "cpes": [ "cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0.0" }, { "fixed": "3.2.1.0" } ], "source": "CPE_RANGE", "vendor_product": "siemens:simatic_itc1500_firmware" }, { "cpes": [ "cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0.0" }, { "fixed": "3.2.1.0" } ], "source": "CPE_RANGE", "vendor_product": "siemens:simatic_itc1500_pro_firmware" }, { "cpes": [ "cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0.0" }, { "fixed": "3.2.1.0" } ], "source": "CPE_RANGE", "vendor_product": "siemens:simatic_itc1900_firmware" }, { "cpes": [ "cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0.0" }, { "fixed": "3.2.1.0" } ], "source": "CPE_RANGE", "vendor_product": "siemens:simatic_itc1900_pro_firmware" }, { "cpes": [ "cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0.0" }, { "fixed": "3.2.1.0" } ], "source": "CPE_RANGE", "vendor_product": "siemens:simatic_itc2200_firmware" }, { "cpes": [ "cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "3.0.0.0" }, { "fixed": "3.2.1.0" } ], "source": "CPE_RANGE", "vendor_product": "siemens:simatic_itc2200_pro_firmware" }, { "cpes": [ "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*", "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*" ], "extracted_events": [ { "introduced": "14.04" }, { "last_affected": "14.04" }, { "introduced": "16.04" }, { "last_affected": "16.04" }, { "introduced": "16.04" }, { "last_affected": "16.04" }, { "introduced": "18.04" }, { "last_affected": "18.04" }, { "introduced": "18.10" }, { "last_affected": "18.10" }, { "introduced": "20.04" }, { "last_affected": "20.04" } ], "source": "CPE_STRING", "vendor_product": "canonical:ubuntu_linux" }, { "cpes": [ "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "8.0" }, { "last_affected": "8.0" }, { "introduced": "9.0" }, { "last_affected": "9.0" } ], "source": "CPE_STRING", "vendor_product": "debian:debian_linux" }, { "cpes": [ "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "15.2" }, { "last_affected": "15.2" } ], "source": "CPE_STRING", "vendor_product": "opensuse:leap" } ] }- References
-
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
- https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
- https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html
- https://usn.ubuntu.com/4434-1/
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1
Affected packages
Git / github.com/libvnc/libvncserver
Affected ranges
- Type
- GIT
- Repo
- https://github.com/libvnc/libvncserver
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast AffectedFixed
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "last_affected": "0.9.12" } ], "source": [ "CPE_RANGE", "REFERENCES" ] }
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
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20839.json"
vanir_signatures
[
{
"deprecated": false,
"digest": {
"line_hashes": [
"52876093981780426855339000577121701361",
"219712199165541620599692929659710770492",
"171295154040440005142750223507192156157",
"335200676590474681522118523928735727245"
],
"threshold": 0.9
},
"id": "CVE-2019-20839-05ce48f7",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/libvnc/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1",
"target": {
"file": "libvncclient/sockets.c"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "141014285350177029189592347789716145813",
"length": 609
},
"id": "CVE-2019-20839-ec50ec35",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/libvnc/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1",
"target": {
"file": "libvncclient/sockets.c",
"function": "ConnectClientToUnixSock"
}
}
]
vanir_signatures_modified
"2026-08-07T15:19:00Z"