pysec-2020-99
Vulnerability from pysec
Published
2020-06-01 19:15
Modified
2020-09-02 16:15
Details

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
Name purl
rsa pkg:pypi/rsa
Aliases


To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "rsa",
        "purl": "pkg:pypi/rsa"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1",
        "1.2",
        "1.3",
        "1.3.1",
        "1.3.2",
        "1.3.3",
        "2.0",
        "3.0",
        "3.0.1",
        "3.1",
        "3.1.1",
        "3.1.2",
        "3.1.3",
        "3.1.4",
        "3.2",
        "3.2.1",
        "3.2.2",
        "3.2.3",
        "3.3",
        "3.4",
        "3.4.1",
        "3.4.2",
        "4.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-13757",
    "GHSA-537h-rv9q-vvph"
  ],
  "details": "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).",
  "id": "PYSEC-2020-99",
  "modified": "2020-09-02T16:15:00Z",
  "published": "2020-06-01T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4478-1/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-537h-rv9q-vvph"
    }
  ]
}


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