Vulnerability-Lookup

FKIE_CVE-2020-6017

Vulnerability from fkie_nvd - Published: 2020-12-03 14:15 - Updated: 2026-06-17 03:22

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.

References

URL	Tags
cve@checkpoint.com	https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43	Patch, Third Party Advisory
cve@checkpoint.com	https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/	Exploit, Third Party Advisory

Impacted products

	Vendor	Product	Version
	valvesoftware	game_networking_sockets	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Game Networking Sockets",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "All versions prior to v1.2.0"
            }
          ]
        }
      ],
      "source": "cve@checkpoint.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:valvesoftware:game_networking_sockets:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CB71176-D705-4517-81B9-97A557278890",
              "versionEndExcluding": "1.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Valve\u0027s Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution."
    },
    {
      "lang": "es",
      "value": "Game Networking Sockets de Valve versiones anteriores a v1.2.0, manejan de manera inapropiada segmentos largos y no confiables en la funci\u00f3n SNP_ReceiveUnreliableSegment() cuando est\u00e1n configurados para admitir mensajes de texto plano, conllevando a un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria y resultando en una corrupci\u00f3n de la memoria y posiblemente incluso en una ejecuci\u00f3n de c\u00f3digo remota"
    }
  ],
  "id": "CVE-2020-6017",
  "lastModified": "2026-06-17T03:22:35.853",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-12-03T14:15:11.020",
  "references": [
    {
      "source": "cve@checkpoint.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
    },
    {
      "source": "cve@checkpoint.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
    }
  ],
  "sourceIdentifier": "cve@checkpoint.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ],
      "source": "cve@checkpoint.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2020-6017 (GCVE-0-2020-6017)

Vulnerability from cvelistv5 – Published: 2020-12-03 13:34 – Updated: 2024-08-04 08:47

Summary

Severity

No CVSS data available.

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

checkpoint mitre root

References

2 references

URL	Tags
https://github.com/ValveSoftware/GameNetworkingSo…	x_refsource_MISC
https://research.checkpoint.com/2020/game-on-find…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Game Networking Sockets	Affected: All versions prior to v1.2.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T08:47:40.930Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
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            ],
            "url": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
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            "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Game Networking Sockets",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "All versions prior to v1.2.0"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
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        "dateUpdated": "2020-12-10T23:20:49.000Z",
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        },
        {
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          "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@checkpoint.com",
          "ID": "CVE-2020-6017",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Game Networking Sockets",
                      "version": {
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                          {
                            "version_value": "All versions prior to v1.2.0"
                          }
                        ]
                      }
                    }
                  ]
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                "vendor_name": "n/a"
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            ]
          }
        },
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  "cveMetadata": {
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}

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.