pysec - pysec-2020-69

PYSEC-2020-69

Vulnerability from pysec - Published: 2020-12-02 20:15 - Updated: 2020-12-08 02:37

Details

Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA none algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1.

Impacted products

Name	purl
oic	pkg:pypi/oic

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "oic",
        "purl": "pkg:pypi/oic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "62f8d753fa17c8b1f29f8be639cf0b33afb02498"
            }
          ],
          "repo": "https://github.com/OpenIDC/pyoidc",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.0",
        "0.5.0",
        "0.6.0",
        "0.7.0",
        "0.7.2",
        "0.7.3",
        "0.7.4",
        "0.7.5",
        "0.7.6",
        "0.7.7",
        "0.7.8",
        "0.8.1",
        "0.8.2",
        "0.8.3",
        "0.8.4.0",
        "0.8.5.0",
        "0.9.0.0",
        "0.9.1.0",
        "0.9.4.0",
        "0.9.5.0",
        "0.10.0.0",
        "0.11.0.0",
        "0.11.0.1",
        "0.12.0",
        "0.13.0",
        "0.13.1",
        "0.14.0",
        "0.15.0",
        "0.15.1",
        "1.0.0",
        "1.0.1",
        "1.1.0",
        "1.1.1",
        "1.1.2",
        "1.2.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26244",
    "GHSA-4fjv-pmhg-3rfg"
  ],
  "details": "Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1.",
  "id": "PYSEC-2020-69",
  "modified": "2020-12-08T02:37:00Z",
  "published": "2020-12-02T20:15:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"
    },
    {
      "type": "FIX",
      "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/oic/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
    }
  ]
}

CVE-2020-26244 (GCVE-0-2020-26244)

Vulnerability from cvelistv5 – Published: 2020-12-02 20:05 – Updated: 2024-08-04 15:56

Summary

Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-325 - Missing Required Cryptographic Step
CWE-347 - Improper Verification of Cryptographic Signature

Assigner

GitHub_M

References

URL

Tags

	https://github.com/OpenIDC/pyoidc/security/adviso…	x_refsource_CONFIRM
	https://pypi.org/project/oic/	x_refsource_MISC
	https://github.com/OpenIDC/pyoidc/commit/62f8d753…	x_refsource_MISC
	https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	OpenIDC	pyoidc	Affected: < 1.2.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:56:04.228Z",
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            ],
            "url": "https://pypi.org/project/oic/"
          },
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            "tags": [
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            ],
            "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
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            "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
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        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "product": "pyoidc",
          "vendor": "OpenIDC",
          "versions": [
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            }
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      ],
      "metrics": [
        {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.8,
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            "confidentialityImpact": "HIGH",
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      "problemTypes": [
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              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
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              "cweId": "CWE-347",
              "description": "CWE-347 Improper Verification of Cryptographic Signature",
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      "providerMetadata": {
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      },
      "references": [
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            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://pypi.org/project/oic/"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
        },
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          "tags": [
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          ],
          "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
        }
      ],
      "source": {
        "advisory": "GHSA-4fjv-pmhg-3rfg",
        "discovery": "UNKNOWN"
      },
      "title": "Cryptographic issues in Python oic",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-26244",
          "STATE": "PUBLIC",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "pyoidc",
                      "version": {
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                          {
                            "version_value": "\u003c 1.2.1"
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                      }
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                "vendor_name": "OpenIDC"
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        "description": {
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        },
        "impact": {
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            "confidentialityImpact": "HIGH",
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              "description": [
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                  "lang": "eng",
                  "value": "CWE-347 Improper Verification of Cryptographic Signature"
                }
              ]
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          ]
        },
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              "name": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg",
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              "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
            },
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              "name": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1",
              "refsource": "MISC",
              "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-4fjv-pmhg-3rfg",
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  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2020-26244",
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    "dateReserved": "2020-10-01T00:00:00",
    "dateUpdated": "2024-08-04T15:56:04.228Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

GHSA-4FJV-PMHG-3RFG

Vulnerability from github – Published: 2020-12-04 16:47 – Updated: 2024-10-07 21:07

Summary

Multiple cryptographic issues in Python oic

Details

Impact

Client implementations using this library

Issues

1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA none algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future)

Patches

1) IdToken signature is now always checked. 2) JWA none algorithm is now allowed only if using the response_type code 3) IdToken verification is now done automatically. 4) iat claim is now checked for sanity.

Severity ?

6.8 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

7.6 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "oic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26244"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-325",
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-12-02T20:06:06Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n* Client implementations using this library\n\n### Issues\n1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg.\n2) JWA `none` algorithm was allowed in all flows.\n3) `oic.consumer.Consumer.parse_authz` returns an unverified IdToken. The verification of the token was left to the discretion of the implementator.\n4) `iat` claim was not checked for sanity (i.e. it could be in the future)\n\n### Patches\n1) IdToken signature is now always checked.\n2) JWA `none` algorithm is now allowed only if using the `response_type` `code`\n3) IdToken verification is now done automatically.\n4) `iat` claim is now checked for sanity.",
  "id": "GHSA-4fjv-pmhg-3rfg",
  "modified": "2024-10-07T21:07:21Z",
  "published": "2020-12-04T16:47:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26244"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/OpenIDC/pyoidc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/oic/PYSEC-2020-69.yaml"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/oic"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Multiple cryptographic issues in Python oic"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2020-69

CVE-2020-26244 (GCVE-0-2020-26244)

GHSA-4FJV-PMHG-3RFG

Impact

Issues

Patches

Tags

Sightings

Nomenclature