CVE-2020-14401

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Source
https://cve.org/CVERecord?id=CVE-2020-14401
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14401.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-14401
Downstream
Related
Published
2020-06-17T16:15:12.087Z
Modified
2026-05-18T21:34:38.693736Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
Summary
[none]
Details

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/scale.c has a pixel_value integer overflow.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
                {
                    "last_affected": "8.0"
                },
                {
                    "last_affected": "9.0"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
                "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
                {
                    "last_affected": "15.1"
                },
                {
                    "last_affected": "15.2"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:simatic_itc1500_firmware",
            "extracted_events": [
                {
                    "introduced": "3.0.0.0"
                },
                {
                    "fixed": "3.2.1.0"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:simatic_itc1500_pro_firmware",
            "extracted_events": [
                {
                    "introduced": "3.0.0.0"
                },
                {
                    "fixed": "3.2.1.0"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:simatic_itc1900_firmware",
            "extracted_events": [
                {
                    "introduced": "3.0.0.0"
                },
                {
                    "fixed": "3.2.1.0"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:simatic_itc1900_pro_firmware",
            "extracted_events": [
                {
                    "introduced": "3.0.0.0"
                },
                {
                    "fixed": "3.2.1.0"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:simatic_itc2200_firmware",
            "extracted_events": [
                {
                    "introduced": "3.0.0.0"
                },
                {
                    "fixed": "3.2.1.0"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "cpes": [
                "cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "siemens:simatic_itc2200_pro_firmware",
            "extracted_events": [
                {
                    "introduced": "3.0.0.0"
                },
                {
                    "fixed": "3.2.1.0"
                }
            ],
            "source": "CPE_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/libvnc/libvncserver

Affected ranges

Type
GIT
Repo
https://github.com/libvnc/libvncserver
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2aa20dad4c23c18948d3f63b33f9dfec1f837729
Fixed
a6788d1da719ae006605b78d22f5a9f170b423af
Database specific 
{
    "cpe": "cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.9.13"
        }
    ]
}

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

vanir_signatures 
[
    {
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "248208949429347463031521643800921156886",
                "267256123706877668341539977664866338222",
                "69871433148263572302381190377581994547",
                "163000897568946296525180340287495104796"
            ]
        },
        "id": "CVE-2020-14401-b9e34590",
        "signature_version": "v1",
        "source": "https://github.com/libvnc/libvncserver/commit/a6788d1da719ae006605b78d22f5a9f170b423af",
        "target": {
            "file": "libvncserver/scale.c"
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "285897253734337289413665599072403539224",
            "length": 3173.0
        },
        "id": "CVE-2020-14401-f7899987",
        "signature_version": "v1",
        "source": "https://github.com/libvnc/libvncserver/commit/a6788d1da719ae006605b78d22f5a9f170b423af",
        "target": {
            "function": "rfbScaledScreenUpdateRect",
            "file": "libvncserver/scale.c"
        },
        "deprecated": false
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14401.json"
vanir_signatures_modified 
"2026-05-18T21:34:38Z"