gsd-2019-20477
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.
Aliases
Aliases
CVE-2019-20477


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-20477",
    "description": "PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.",
    "id": "GSD-2019-20477",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-20477.html",
      "https://access.redhat.com/errata/RHSA-2021:0420",
      "https://access.redhat.com/errata/RHSA-2020:4641",
      "https://linux.oracle.com/cve/CVE-2019-20477.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-20477"
      ],
      "details": "PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.",
      "id": "GSD-2019-20477",
      "modified": "2023-12-13T01:23:43.166718Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2019-20477",
        "STATE": "PUBLIC"
      },
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                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
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                    }
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            }
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            "value": "PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342."
          }
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        "reference_data": [
          {
            "name": "https://github.com/yaml/pyyaml/blob/master/CHANGES",
            "refsource": "MISC",
            "url": "https://github.com/yaml/pyyaml/blob/master/CHANGES"
          },
          {
            "name": "https://www.exploit-db.com/download/47655",
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            "url": "https://www.exploit-db.com/download/47655"
          },
          {
            "name": "FEDORA-2020-3162499159",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H/"
          },
          {
            "name": "FEDORA-2020-e84e90dc4a",
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN/"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=5.1,\u003c5.2",
          "affected_versions": "All versions starting from 5.1 before 5.2",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-502",
            "CWE-937"
          ],
          "date": "2022-01-04",
          "description": "PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.",
          "fixed_versions": [
            "5.2"
          ],
          "identifier": "CVE-2019-20477",
          "identifiers": [
            "GHSA-3pqx-4fqf-j49f",
            "CVE-2019-20477"
          ],
          "not_impacted": "All versions before 5.1, all versions starting from 5.2",
          "package_slug": "pypi/PyYAML",
          "pubdate": "2021-04-20",
          "solution": "Upgrade to version 5.2 or above.",
          "title": "Deserialization of Untrusted Data",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2019-20477",
            "https://github.com/yaml/pyyaml/blob/master/CHANGES",
            "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN/",
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            "https://www.exploit-db.com/download/47655",
            "https://github.com/advisories/GHSA-3pqx-4fqf-j49f"
          ],
          "uuid": "43a0466c-7d41-47b6-aafa-f6c2cfaaef4d"
        }
      ]
    },
    "nvd.nist.gov": {
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                "cpe23Uri": "cpe:2.3:a:pyyaml:pyyaml:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "5.1.2",
                "versionStartIncluding": "5.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
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              },
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                "cpe_name": [],
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            ],
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      },
      "cve": {
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        "description": {
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            }
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        },
        "problemtype": {
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          "reference_data": [
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              "name": "https://www.exploit-db.com/download/47655",
              "refsource": "MISC",
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              "url": "https://www.exploit-db.com/download/47655"
            },
            {
              "name": "https://github.com/yaml/pyyaml/blob/master/CHANGES",
              "refsource": "MISC",
              "tags": [
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              "url": "https://github.com/yaml/pyyaml/blob/master/CHANGES"
            },
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              "name": "FEDORA-2020-3162499159",
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2022-01-01T19:38Z",
      "publishedDate": "2020-02-19T04:15Z"
    }
  }
}


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