Vulnerability-Lookup

CVE-2020-14402 (GCVE-0-2020-14402)

Vulnerability from cvelistv5 – Published: 2020-06-17 15:12 – Updated: 2024-08-04 12:46

Summary

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

CWE

Assigner

mitre mitre root

References

10 references

URL	Tags
https://github.com/LibVNC/libvncserver/compare/Li…	x_refsource_MISC
https://github.com/LibVNC/libvncserver/commit/74e…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4434-1/	vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4573-1/	vendor-advisoryx_refsource_UBUNTU
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM

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      "title": "SUSE CVE CVE-2020-14402",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-14402.json",
      "version": "16"
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}

OPENSUSE-SU-2020:1056-1

Vulnerability from csaf_opensuse - Published: 2020-07-24 12:20 - Updated: 2020-07-24 12:20

Summary

Security update for LibVNCServer

Severity

Important

Scope

10 vulnerabilities in this advisory, including CVE-2020-14402.

CVE-2020-14402

6.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Recommended: 6 products

Open the full advisory

OPENSUSE-SU-2024:10598-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00

Summary

LibVNCServer-devel-0.9.13-3.1 on GA media

Severity

Moderate

Scope

30 vulnerabilities in this advisory, including CVE-2020-14402.

CVE-2020-14402

6.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Recommended: 12 products

Open the full advisory

SSA-390195

Vulnerability from csaf_siemens - Published: 2021-12-14 00:00 - Updated: 2021-12-14 00:00

Summary

SSA-390195: LibVNC Vulnerabilities in SIMATIC ITC Products

Scope

19 vulnerabilities in this advisory, including CVE-2020-14402.

CVE-2020-14402

5.4 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C

Known affected: 6 products

https://support.industry.siemens.com/cs/ww/en/view/109804128/

Open the full advisory

SUSE-SU-2020:14424-1

Vulnerability from csaf_suse - Published: 2020-07-17 12:21 - Updated: 2020-07-17 12:21

Summary

Security update for LibVNCServer

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2020-14402.

CVE-2020-14402

6.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Recommended: 5 products

Open the full advisory

SUSE-SU-2020:1922-1

Vulnerability from csaf_suse - Published: 2020-07-15 09:31 - Updated: 2020-07-15 09:31

Summary

Security update for LibVNCServer

Severity

Important

Scope

10 vulnerabilities in this advisory, including CVE-2020-14402.

CVE-2020-14402

6.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Recommended: 11 products

Open the full advisory

SUSE-SU-2020:2167-1

Vulnerability from csaf_suse - Published: 2020-08-07 12:54 - Updated: 2020-08-07 12:54

Summary

Security update for LibVNCServer

Severity

Important

Scope

12 vulnerabilities in this advisory, including CVE-2020-14402.

CVE-2020-14402

6.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Recommended: 76 products

Open the full advisory

UBUNTU-CVE-2020-14402 (CVE-2020-14402)

Vulnerability from osv_ubuntu – Published: 2020-06-17 16:15 – Updated: 2026-05-20 14:52 – Source website

Details

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.

Severity

5.4 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2020-14402	REPORT
	https://github.com/LibVNC/libvncserver/compare/Li…	REPORT
	https://ubuntu.com/security/notices/USN-4434-1	ADVISORY
	https://ubuntu.com/security/notices/USN-4573-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2020-14402	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "x11vnc",
            "binary_version": "0.9.13-1.1"
          },
          {
            "binary_name": "x11vnc-data",
            "binary_version": "0.9.13-1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "x11vnc",
        "purl": "pkg:deb/ubuntu/x11vnc@0.9.13-1.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.13-1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
          },
          {
            "binary_name": "libvncserver-config",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
          },
          {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libvncserver",
        "purl": "pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.5?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.10+dfsg-3ubuntu0.16.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.10+dfsg-3",
        "0.9.10+dfsg-3build1",
        "0.9.10+dfsg-3ubuntu0.16.04.1",
        "0.9.10+dfsg-3ubuntu0.16.04.2",
        "0.9.10+dfsg-3ubuntu0.16.04.3",
        "0.9.10+dfsg-3ubuntu0.16.04.4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vino",
            "binary_version": "3.8.1-0ubuntu9.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "vino",
        "purl": "pkg:deb/ubuntu/vino@3.8.1-0ubuntu9.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.1-0ubuntu9.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.1-0ubuntu6",
        "3.8.1-0ubuntu7",
        "3.8.1-0ubuntu8",
        "3.8.1-0ubuntu9",
        "3.8.1-0ubuntu9.1",
        "3.8.1-0ubuntu9.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
          },
          {
            "binary_name": "libvncserver-config",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
          },
          {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libvncserver",
        "purl": "pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.11+dfsg-1ubuntu1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.11+dfsg-1",
        "0.9.11+dfsg-1ubuntu1",
        "0.9.11+dfsg-1ubuntu1.1",
        "0.9.11+dfsg-1ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vino",
            "binary_version": "3.22.0-3ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "vino",
        "purl": "pkg:deb/ubuntu/vino@3.22.0-3ubuntu1.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.22.0-3ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.1-0ubuntu12",
        "3.22.0-2ubuntu1",
        "3.22.0-3ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
          },
          {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libvncserver",
        "purl": "pkg:deb/ubuntu/libvncserver@0.9.12+dfsg-9ubuntu0.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.12+dfsg-9ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.11+dfsg-1.3",
        "0.9.12+dfsg-3ubuntu3",
        "0.9.12+dfsg-6",
        "0.9.12+dfsg-7",
        "0.9.12+dfsg-8",
        "0.9.12+dfsg-9",
        "0.9.12+dfsg-9ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vino",
            "binary_version": "3.22.0-5ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "vino",
        "purl": "pkg:deb/ubuntu/vino@3.22.0-5ubuntu2.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.22.0-5ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.22.0-5ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libveyon-core",
            "binary_version": "4.3.1+repack1-2build2"
          },
          {
            "binary_name": "veyon-configurator",
            "binary_version": "4.3.1+repack1-2build2"
          },
          {
            "binary_name": "veyon-master",
            "binary_version": "4.3.1+repack1-2build2"
          },
          {
            "binary_name": "veyon-plugins",
            "binary_version": "4.3.1+repack1-2build2"
          },
          {
            "binary_name": "veyon-service",
            "binary_version": "4.3.1+repack1-2build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "veyon",
        "purl": "pkg:deb/ubuntu/veyon@4.3.1+repack1-2build2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2.4+repack1-2",
        "4.2.5+repack1-1",
        "4.3.1+repack1-1",
        "4.3.1+repack1-2",
        "4.3.1+repack1-2build1",
        "4.3.1+repack1-2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libveyon-core",
            "binary_version": "4.5.3+repack1-1build2"
          },
          {
            "binary_name": "veyon-configurator",
            "binary_version": "4.5.3+repack1-1build2"
          },
          {
            "binary_name": "veyon-master",
            "binary_version": "4.5.3+repack1-1build2"
          },
          {
            "binary_name": "veyon-plugins",
            "binary_version": "4.5.3+repack1-1build2"
          },
          {
            "binary_name": "veyon-service",
            "binary_version": "4.5.3+repack1-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "veyon",
        "purl": "pkg:deb/ubuntu/veyon@4.5.3+repack1-1build2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.5.3+repack1-1build1",
        "4.5.3+repack1-1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libveyon-core",
            "binary_version": "4.7.5+repack1-1ubuntu5"
          },
          {
            "binary_name": "veyon-configurator",
            "binary_version": "4.7.5+repack1-1ubuntu5"
          },
          {
            "binary_name": "veyon-master",
            "binary_version": "4.7.5+repack1-1ubuntu5"
          },
          {
            "binary_name": "veyon-plugins",
            "binary_version": "4.7.5+repack1-1ubuntu5"
          },
          {
            "binary_name": "veyon-service",
            "binary_version": "4.7.5+repack1-1ubuntu5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "veyon",
        "purl": "pkg:deb/ubuntu/veyon@4.7.5+repack1-1ubuntu5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.7.5+repack1-1build2",
        "4.7.5+repack1-1ubuntu1",
        "4.7.5+repack1-1ubuntu3",
        "4.7.5+repack1-1ubuntu4",
        "4.7.5+repack1-1ubuntu5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libveyon-core",
            "binary_version": "4.9.7+repack1-1"
          },
          {
            "binary_name": "veyon-configurator",
            "binary_version": "4.9.7+repack1-1"
          },
          {
            "binary_name": "veyon-master",
            "binary_version": "4.9.7+repack1-1"
          },
          {
            "binary_name": "veyon-plugins",
            "binary_version": "4.9.7+repack1-1"
          },
          {
            "binary_name": "veyon-service",
            "binary_version": "4.9.7+repack1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "veyon",
        "purl": "pkg:deb/ubuntu/veyon@4.9.7+repack1-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.7.5+repack1-1ubuntu6",
        "4.7.5+repack1-1ubuntu7",
        "4.9.7+repack1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libveyon-core",
            "binary_version": "4.9.7+repack1-1build1"
          },
          {
            "binary_name": "veyon-configurator",
            "binary_version": "4.9.7+repack1-1build1"
          },
          {
            "binary_name": "veyon-master",
            "binary_version": "4.9.7+repack1-1build1"
          },
          {
            "binary_name": "veyon-plugins",
            "binary_version": "4.9.7+repack1-1build1"
          },
          {
            "binary_name": "veyon-service",
            "binary_version": "4.9.7+repack1-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "veyon",
        "purl": "pkg:deb/ubuntu/veyon@4.9.7+repack1-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.9.7+repack1-1",
        "4.9.7+repack1-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.",
  "id": "UBUNTU-CVE-2020-14402",
  "modified": "2026-05-20T14:52:13Z",
  "published": "2020-06-17T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-14402"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4434-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4573-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-14402"
    }
  ],
  "related": [
    "USN-4434-1",
    "USN-4573-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-14402"
  ]
}

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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2020-14402 (GCVE-0-2020-14402)

OPENSUSE-SU-2020:1056-1

OPENSUSE-SU-2024:10598-1

SSA-390195

SUSE-SU-2020:14424-1

SUSE-SU-2020:1922-1

SUSE-SU-2020:2167-1

UBUNTU-CVE-2020-14402 (CVE-2020-14402)

Tags

Sightings

Nomenclature

Related by attack behaviour