fkie_cve-2020-13757
Vulnerability from fkie_nvd
Published
2020-06-01 19:15
Modified
2024-11-21 05:01
Summary
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Impacted products



{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:python-rsa_project:python-rsa:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5FF2CAA4-9911-439F-88CC-526D14B768A4",
              "versionEndExcluding": "4.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
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          "cpeMatch": [
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              "criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
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              "vulnerable": true
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              "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956",
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          "negate": false,
          "operator": "OR"
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    },
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      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
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              "vulnerable": true
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          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation)."
    },
    {
      "lang": "es",
      "value": "Python-RSA versi\u00f3n 4.1, ignora bytes \u0027\\0\u0027 principales durante la desencriptaci\u00f3n del texto cifrado. Esto podr\u00eda tener un impacto relevante para la seguridad, por ejemplo, al ayudar a un atacante a inferir que una aplicaci\u00f3n utiliza Python-RSA, o si la longitud del texto cifrado aceptado afecta al comportamiento de la aplicaci\u00f3n (por ejemplo, al causar una asignaci\u00f3n excesiva de memoria)"
    }
  ],
  "id": "CVE-2020-13757",
  "lastModified": "2024-11-21T05:01:47.397",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-06-01T19:15:10.067",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://usn.ubuntu.com/4478-1/"
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      "tags": [
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        "Third Party Advisory"
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      "url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
    },
    {
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      "tags": [
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        "Issue Tracking",
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      "url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4478-1/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-327"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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