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CVE-2018-18541

Status: ModifiedHigh (7.5)—

In Teeworlds before 0.6.5, connection packets could be forged. There was no challenge-response involved in the connection build up. A remote attacker could send connection packets from a spoofed IP address and occupy all server slots, or even use them for a reflection attack using map download packets.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Debian — Debian LinuxTeeworlds — Teeworlds

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-18541",
  "cveTags": [],
  "metrics": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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        "cvssData": {
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  "affected": [
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  "published": "2018-10-20T22:29:00.263",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-20"
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  ],
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      "lang": "en",
      "value": "In Teeworlds before 0.6.5, connection packets could be forged. There was no challenge-response involved in the connection build up. A remote attacker could send connection packets from a spoofed IP address and occupy all server slots, or even use them for a reflection attack using map download packets."
    },
    {
      "lang": "es",
      "value": "En Teeworlds en versiones anteriores a la 0.6.5, podrían falsificarse paquetes de conexión. No ha habido un desafío-respuesta involucrado en el build up de conexión. Un atacante remoto podría enviar paquetes de conexión desde una dirección IP suplantada y ocupar todos los slots del servidor o emplearlos para un ataque de reflexión mediante paquetes de descarga de mapas."
    }
  ],
  "lastModified": "2026-06-17T01:47:28.467",
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}