FKIE_CVE-2020-10539

Vulnerability from fkie_nvd - Published: 2021-02-05 14:15 - Updated: 2024-11-21 04:55
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An issue was discovered in Epikur before 20.1.1. The Epikur server contains the checkPasswort() function that, upon user login, checks the submitted password against the user password's MD5 hash stored in the database. It is also compared to a second MD5 hash, which is the same for every user (aka a "Backdoor Password" of 3p1kursupport). If the submitted password matches either one, access is granted.
References
cve@mitre.orghttps://www.x41-dsec.de/lab/advisories/x41-2020-003-epikurExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.x41-dsec.de/lab/advisories/x41-2020-003-epikurExploit, Third Party Advisory
Impacted products
Vendor Product Version
epikur epikur *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:epikur:epikur:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A02B780-1039-45BF-A70D-3A5B8A8BC801",
              "versionEndExcluding": "20.1.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Epikur before 20.1.1. The Epikur server contains the checkPasswort() function that, upon user login, checks the submitted password against the user password\u0027s MD5 hash stored in the database. It is also compared to a second MD5 hash, which is the same for every user (aka a \"Backdoor Password\" of 3p1kursupport). If the submitted password matches either one, access is granted."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en Epikur versiones anteriores a 20.1.1.\u0026#xa0;El servidor de Epikur contiene la funci\u00f3n checkPasswort() que, al iniciar sesi\u00f3n, comprueba la contrase\u00f1a enviada con el hash MD5 contra la contrase\u00f1a del usuario almacenada en la base de datos.\u0026#xa0;Tambi\u00e9n es comparada con un segundo hash MD5, que es el mismo para todos los usuarios (tambi\u00e9n se conoce como \"Backdoor Password\" de 3p1kursupport).\u0026#xa0;Si la contrase\u00f1a enviada coincide con cualquiera de las dos, el acceso es otorgado"
    }
  ],
  "id": "CVE-2020-10539",
  "lastModified": "2024-11-21T04:55:32.520",
  "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": "2021-02-05T14:15:15.373",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.x41-dsec.de/lab/advisories/x41-2020-003-epikur"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://www.x41-dsec.de/lab/advisories/x41-2020-003-epikur"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.



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