pysec - pysec-2020-69

pysec-2020-69

Vulnerability from pysec

Published

2020-12-02 20:15

Modified

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"
    }
  ]
}

ghsa-4fjv-pmhg-3rfg

Vulnerability from github

Published

2020-12-04 16:47

Modified

2024-10-07 21:07

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

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.

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"
}

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

Vulnerability from cvelistv5

Published

2020-12-02 20:05

Modified

2024-08-04 15:56

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

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.

References

URL

Tags

	https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg	x_refsource_CONFIRM
	https://pypi.org/project/oic/	x_refsource_MISC
	https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498	x_refsource_MISC
	https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	OpenIDC	pyoidc	Version: < 1.2.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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          "dateUpdated": "2024-08-04T15:56:04.228Z",
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          },
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            ],
            "url": "https://pypi.org/project/oic/"
          },
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        ],
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    ],
    "cna": {
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        {
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      ],
      "metrics": [
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      ],
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        },
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        },
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          "url": "https://pypi.org/project/oic/"
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}

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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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-2020-69

Vulnerability from pysec

ghsa-4fjv-pmhg-3rfg

Vulnerability from github

Impact

Issues

Patches

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

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature