CVE-2020-14396

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Source
https://cve.org/CVERecord?id=CVE-2020-14396
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14396.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-14396
Downstream
Published
2020-06-17T16:15:11Z
Modified
2026-08-07T16:35:51Z
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

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.

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"
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        {
            "cpes":  [
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            ],
            "extracted_events":  [
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                    "introduced":  "3.0.0.0"
                },
                {
                    "fixed":  "3.2.1.0"
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            "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",
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        },
        {
            "cpes":  [
                "cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:*"
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            "extracted_events":  [
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                    "introduced":  "3.0.0.0"
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                {
                    "fixed":  "3.2.1.0"
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            ],
            "source":  "CPE_RANGE",
            "vendor_product":  "siemens:simatic_itc2200_firmware"
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        {
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            ],
            "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:*:*:*"
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            "extracted_events":  [
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                    "introduced":  "14.04"
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                    "last_affected":  "14.04"
                },
                {
                    "introduced":  "16.04"
                },
                {
                    "last_affected":  "16.04"
                },
                {
                    "introduced":  "16.04"
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                    "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"
        }
    ]
}
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
Last Affected
0a70095271d845d16a3ed17354841b01f33963ad
Fixed
33441d90a506d5f3ae9388f2752901227e430553
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-2020-14396.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "289870025509888091998254113739023981642",
            "length":  2497
        },
        "id":  "CVE-2020-14396-a63a5cc6",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/libvnc/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553",
        "target":  {
            "file":  "libvncclient/tls_openssl.c",
            "function":  "open_ssl_connection"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
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            ],
            "threshold":  0.9
        },
        "id":  "CVE-2020-14396-c848c6fe",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/libvnc/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553",
        "target":  {
            "file":  "libvncclient/tls_openssl.c"
        }
    }
]
vanir_signatures_modified 
"2026-08-07T16:35:51Z"