pysec - pysec-2020-147

PYSEC-2020-147

Vulnerability from pysec - Published: 2020-02-05 16:15 - Updated: 2020-02-07 19:19

Details

TUF (aka The Update Framework) through 0.12.1 has Improper Verification of a Cryptographic Signature.

Impacted products

Name	purl
tuf	pkg:pypi/tuf

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "tuf",
        "purl": "pkg:pypi/tuf"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.5",
        "0.9.8",
        "0.9.9",
        "0.10.0",
        "0.10.1",
        "0.10.2",
        "0.11.dev0",
        "0.11.0",
        "0.11.1",
        "0.11.2.dev1",
        "0.11.2.dev2",
        "0.11.2.dev3",
        "0.12.dev0",
        "0.12.dev1",
        "0.12.dev2",
        "0.12.0",
        "0.12.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-6174",
    "GHSA-pwqf-9h7j-7mv8"
  ],
  "details": "TUF (aka The Update Framework) through 0.12.1 has Improper Verification of a Cryptographic Signature.",
  "id": "PYSEC-2020-147",
  "modified": "2020-02-07T19:19:00Z",
  "published": "2020-02-05T16:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/pull/974"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-pwqf-9h7j-7mv8"
    }
  ]
}

GHSA-PWQF-9H7J-7MV8

Vulnerability from github – Published: 2020-08-21 16:25 – Updated: 2024-11-18 22:40

Summary

Incorrect threshold signature computation in TUF

Details

Impact

Metadadata signature verification, as used in tuf.client.updater, counted each of multiple signatures with identical authorized keyids separately towards the threshold. Therefore, an attacker with access to a valid signing key could create multiple valid signatures in order to meet the minimum threshold of keys before the metadata was considered valid.

The tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue.

Patches

A fix is available in version 0.12.2 or newer.

Workarounds

No workarounds are known for this issue.

References

CVE-2020-6174
Pull request resolving the issue PR 974

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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "tuf"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-6174"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-21T16:25:02Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\nMetadadata signature verification, as used in `tuf.client.updater`, counted each of multiple signatures with identical authorized keyids  separately towards the threshold. Therefore, an attacker with access to a valid signing key could create multiple valid signatures in order to meet the minimum threshold of keys before the metadata was considered valid.\n\nThe tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue.\n\n### Patches\nA [fix](https://github.com/theupdateframework/tuf/pull/974) is available in version [0.12.2](https://github.com/theupdateframework/tuf/releases/tag/v0.12.2) or newer.\n\n### Workarounds\nNo workarounds are known for this issue.\n\n### References\n* [CVE-2020-6174](https://nvd.nist.gov/vuln/detail/CVE-2020-6174)\n* Pull request resolving the issue [PR 974](https://github.com/theupdateframework/tuf/pull/974)",
  "id": "GHSA-pwqf-9h7j-7mv8",
  "modified": "2024-11-18T22:40:36Z",
  "published": "2020-08-21T16:25:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/security/advisories/GHSA-pwqf-9h7j-7mv8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-6174"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/pull/974"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/python-tuf/commit/2977188139d065ff3356c3cb4aec60c582b57e0e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/tuf/PYSEC-2020-147.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/theupdateframework/tuf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/releases/tag/v0.12.2"
    }
  ],
  "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": "Incorrect threshold signature computation in TUF"
}

CVE-2020-6174 (GCVE-0-2020-6174)

Vulnerability from cvelistv5 – Published: 2020-02-05 15:49 – Updated: 2024-08-04 08:55

Summary

TUF (aka The Update Framework) through 0.12.1 has Improper Verification of a Cryptographic Signature.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

https://github.com/theupdateframework/tuf/pull/974

x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T08:55:22.406Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/theupdateframework/tuf/pull/974"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
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      ],
      "datePublic": "2020-01-10T00:00:00",
      "descriptions": [
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-02-05T15:49:15",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/theupdateframework/tuf/pull/974"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-6174",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
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                      "version": {
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                          {
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                          }
                        ]
                      }
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                "vendor_name": "n/a"
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        "data_format": "MITRE",
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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    "dateReserved": "2020-01-08T00:00:00",
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  "dataVersion": "5.1"
}

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-2020-147

GHSA-PWQF-9H7J-7MV8

Impact

Patches

Workarounds

References

CVE-2020-6174 (GCVE-0-2020-6174)

Tags

Sightings

Nomenclature