pysec - pysec-2021-142

pysec-2021-142

Vulnerability from pysec

Published

2021-02-09 21:15

Modified

2021-08-27 03:22

Details

A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.

Aliases

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pyyaml",
        "purl": "pkg:pypi/pyyaml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.01",
        "3.02",
        "3.03",
        "3.04",
        "3.05",
        "3.06",
        "3.07",
        "3.08",
        "3.09",
        "3.10",
        "3.11",
        "3.12",
        "3.13",
        "3.13b1",
        "3.13rc1",
        "4.2b1",
        "4.2b2",
        "4.2b4",
        "5.1",
        "5.1.1",
        "5.1.2",
        "5.1b1",
        "5.1b3",
        "5.1b5",
        "5.1b7",
        "5.2",
        "5.2b1",
        "5.3",
        "5.3.1",
        "5.3b1",
        "5.4b1",
        "5.4b2"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-14343",
    "GHSA-8q59-q68h-6hv4"
  ],
  "details": "A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.",
  "id": "PYSEC-2021-142",
  "modified": "2021-08-27T03:22:18.913334Z",
  "published": "2021-02-09T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860466"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-8q59-q68h-6hv4"
    }
  ]
}

cve-2020-14343

Vulnerability from cvelistv5

Published

2021-02-09 00:00

Modified

2024-08-04 12:39

Severity ?

Summary

References

▼	URL	Tags
	https://github.com/yaml/pyyaml/issues/420
	https://bugzilla.redhat.com/show_bug.cgi?id=1860466
	https://www.oracle.com/security-alerts/cpuapr2022.html
	https://www.oracle.com/security-alerts/cpujul2022.html
	https://github.com/SeldonIO/seldon-core/issues/2252

Impacted products

▼	Vendor	Product
	n/a	PyYAML

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T12:39:36.530Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/yaml/pyyaml/issues/420"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860466"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/SeldonIO/seldon-core/issues/2252"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "PyYAML",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "PyYAML 5.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-06T00:00:00",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://github.com/yaml/pyyaml/issues/420"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860466"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
        },
        {
          "url": "https://github.com/SeldonIO/seldon-core/issues/2252"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2020-14343",
    "datePublished": "2021-02-09T00:00:00",
    "dateReserved": "2020-06-17T00:00:00",
    "dateUpdated": "2024-08-04T12:39:36.530Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-8q59-q68h-6hv4

Vulnerability from github

Published

2021-03-25 21:26

Modified

2024-10-25 21:31

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Summary

Improper Input Validation in PyYAML

Details

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "PyYAML"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-14343"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-03-25T21:15:23Z",
    "nvd_published_at": "2021-02-09T21:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.",
  "id": "GHSA-8q59-q68h-6hv4",
  "modified": "2024-10-25T21:31:44Z",
  "published": "2021-03-25T21:26:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14343"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SeldonIO/seldon-core/issues/2252"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yaml/pyyaml/issues/420"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yaml/pyyaml/issues/420#issuecomment-663673966"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yaml/pyyaml/commit/a001f2782501ad2d24986959f0239a354675f9dc"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860466"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-8q59-q68h-6hv4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2021-142.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/yaml/pyyaml"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/PyYAML"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Improper Input Validation in PyYAML"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

pysec-2021-142

Vulnerability from pysec

cve-2020-14343

Vulnerability from cvelistv5

ghsa-8q59-q68h-6hv4

Vulnerability from github

Tags

Sightings

Nomenclature