pysec - pysec-2020-163

pysec-2020-163

Vulnerability from pysec

Published

2020-01-02 15:15

Modified

2020-12-08 18:32

Details

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.

Aliases

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "ecdsa",
        "purl": "pkg:pypi/ecdsa"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6",
        "0.7",
        "0.8",
        "0.9",
        "0.10",
        "0.11",
        "0.12",
        "0.13",
        "0.13.1",
        "0.13.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2019-14859",
    "GHSA-8qxj-f9rh-9fg2"
  ],
  "details": "A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.",
  "id": "PYSEC-2020-163",
  "modified": "2020-12-08T18:32:00Z",
  "published": "2020-01-02T15:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859"
    },
    {
      "type": "WEB",
      "url": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/warner/python-ecdsa/issues/114"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/ecdsa/0.13.3/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-8qxj-f9rh-9fg2"
    }
  ]
}

cve-2019-14859

Vulnerability from cvelistv5

Published

2020-01-02 14:15

Modified

2024-08-05 00:26

Severity ?

7.4 (High) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Summary

References

▼	URL	Tags
	https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3	x_refsource_MISC
	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859	x_refsource_CONFIRM
	https://pypi.org/project/ecdsa/0.13.3/	x_refsource_MISC
	https://github.com/warner/python-ecdsa/issues/114	x_refsource_MISC

Impacted products

▼	Vendor	Product
	Red Hat	python-ecdsa

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T00:26:39.127Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://pypi.org/project/ecdsa/0.13.3/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/warner/python-ecdsa/issues/114"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "python-ecdsa",
          "vendor": "Red Hat",
          "versions": [
            {
              "status": "affected",
              "version": "all python-ecdsa versions before 0.13.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-01-02T14:15:58",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://pypi.org/project/ecdsa/0.13.3/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/warner/python-ecdsa/issues/114"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2019-14859",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "python-ecdsa",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "all python-ecdsa versions before 0.13.3"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Red Hat"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions."
            }
          ]
        },
        "impact": {
          "cvss": [
            [
              {
                "vectorString": "7.4/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.0"
              }
            ]
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-347"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3",
              "refsource": "MISC",
              "url": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859"
            },
            {
              "name": "https://pypi.org/project/ecdsa/0.13.3/",
              "refsource": "MISC",
              "url": "https://pypi.org/project/ecdsa/0.13.3/"
            },
            {
              "name": "https://github.com/warner/python-ecdsa/issues/114",
              "refsource": "MISC",
              "url": "https://github.com/warner/python-ecdsa/issues/114"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2019-14859",
    "datePublished": "2020-01-02T14:15:58",
    "dateReserved": "2019-08-10T00:00:00",
    "dateUpdated": "2024-08-05T00:26:39.127Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-8qxj-f9rh-9fg2

Vulnerability from github

Published

2020-04-01 16:35

Modified

2024-09-20 16:52

Severity ?

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

Summary

Improper Verification of Cryptographic Signature in Pure-Python ECDSA

Details

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "affected_functions": [
          "ecdsa.der.remove_constructed",
          "ecdsa.der.remove_sequence",
          "ecdsa.der.remove_octet_string",
          "ecdsa.der.remove_object",
          "ecdsa.der.remove_integer",
          "ecdsa.der.read_length",
          "ecdsa.keys.VerifyingKey.verify_digest",
          "ecdsa.util.sigdecode_string",
          "ecdsa.util.sigdecode_strings"
        ]
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "ecdsa"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-14859"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-04-01T15:40:54Z",
    "nvd_published_at": "2020-01-02T15:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.",
  "id": "GHSA-8qxj-f9rh-9fg2",
  "modified": "2024-09-20T16:52:23Z",
  "published": "2020-04-01T16:35:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14859"
    },
    {
      "type": "WEB",
      "url": "https://github.com/warner/python-ecdsa/issues/114"
    },
    {
      "type": "WEB",
      "url": "https://github.com/warner/python-ecdsa/pull/115"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tlsfuzzer/python-ecdsa/commit/3427fa29f319b27898a28601955807abb44c0830"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tlsfuzzer/python-ecdsa/commit/9080d1d5ac533da0de00466aaffb49bee808bb4e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tlsfuzzer/python-ecdsa/commit/b0ea52bb3aa9a16c9a4a91fdc0041edbfed10b31"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14859"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-8qxj-f9rh-9fg2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/ecdsa/PYSEC-2020-163.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/warner/python-ecdsa"
    },
    {
      "type": "WEB",
      "url": "https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/ecdsa/0.13.3"
    }
  ],
  "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:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Improper Verification of Cryptographic Signature in Pure-Python ECDSA"
}

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-2020-163

Vulnerability from pysec

cve-2019-14859

Vulnerability from cvelistv5

ghsa-8qxj-f9rh-9fg2

Vulnerability from github

Tags

Sightings

Nomenclature