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CVE-2009-0050

Estado: ModificadaMedia (4.3)—

Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Entrouvert — Lasso

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-0050",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-01-07T18:30:15.860",
  "references": [
    {
      "url": "http://www.ocert.org/advisories/ocert-2008-016.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/499827/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/47837",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ocert.org/advisories/ocert-2008-016.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/499827/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/47837",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077."
    },
    {
      "lang": "es",
      "value": "Lasso versión 2.2.1 y anteriores, no comprueba apropiadamente el valor devuelto de la función DSA_verify de OpenSSL, que permite a los atacantes remotos omitir la comprobación de la cadena de certificados mediante una firma de SSL/TLS malformada, una vulnerabilidad similar a CVE-2008-5077."
    }
  ],
  "lastModified": "2026-06-16T23:04:10.103",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:entrouvert:lasso:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "47688EC4-E2DC-407D-8F2F-EDCFA685C4AD",
              "versionEndIncluding": "2.2.1-0"
            },
            {
              "criteria": "cpe:2.3:a:entrouvert:lasso:1.9.9.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4249DB70-1CB9-45F6-9E2B-476BF8DA3E81"
            },
            {
              "criteria": "cpe:2.3:a:entrouvert:lasso:2.0.0-1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "62798EAF-07A6-49F3-8C9A-D90694AE32FD"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}