pysec - pysec-2020-145

pysec-2020-145

Vulnerability from pysec

Published

2020-09-09 18:15

Modified

2020-09-15 17:35

Details

Python TUF (The Update Framework) reference implementation before version 0.12 it will incorrectly trust a previously downloaded root metadata file which failed verification at download time. This allows an attacker who is able to serve multiple new versions of root metadata (i.e. by a person-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates. This is fixed in version 0.12 and newer.

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": "3d342e648fbacdf43a13d7ba8886aaaf07334af7"
            }
          ],
          "repo": "https://github.com/theupdateframework/tuf",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0"
            }
          ],
          "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"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-15163",
    "GHSA-f8mr-jv2c-v8mg"
  ],
  "details": "Python TUF (The Update Framework) reference implementation before version 0.12 it will incorrectly trust a previously downloaded root metadata file which failed verification at download time. This allows an attacker who is able to serve multiple new versions of root metadata (i.e. by a person-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates. This is fixed in version 0.12 and newer.",
  "id": "PYSEC-2020-145",
  "modified": "2020-09-15T17:35:00Z",
  "published": "2020-09-09T18:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/releases/tag/v0.12.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/theupdateframework/tuf/security/advisories/GHSA-f8mr-jv2c-v8mg"
    },
    {
      "type": "FIX",
      "url": "https://github.com/theupdateframework/tuf/commit/3d342e648fbacdf43a13d7ba8886aaaf07334af7"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/tuf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/pull/885"
    }
  ]
}

CVE-2020-15163 (GCVE-0-2020-15163)

Vulnerability from cvelistv5

Published

2020-09-09 17:30

Modified

2024-08-04 13:08

Severity ?

8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CWE

CWE-863 - Incorrect Authorization

Summary

References

URL

Tags

	https://github.com/theupdateframework/tuf/security/advisories/GHSA-f8mr-jv2c-v8mg	x_refsource_CONFIRM
	https://github.com/theupdateframework/tuf/pull/885	x_refsource_MISC
	https://github.com/theupdateframework/tuf/releases/tag/v0.12.0	x_refsource_MISC
	https://pypi.org/project/tuf	x_refsource_MISC
	https://github.com/theupdateframework/tuf/commit/3d342e648fbacdf43a13d7ba8886aaaf07334af7	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	theupdateframework	tuf	Version: < 0.12

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:08:22.456Z",
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            ],
            "url": "https://github.com/theupdateframework/tuf/pull/885"
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            "url": "https://pypi.org/project/tuf"
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            "url": "https://github.com/theupdateframework/tuf/commit/3d342e648fbacdf43a13d7ba8886aaaf07334af7"
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        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "product": "tuf",
          "vendor": "theupdateframework",
          "versions": [
            {
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              "version": "\u003c 0.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Python TUF (The Update Framework) reference implementation before version 0.12 it will incorrectly trust a previously downloaded root metadata file which failed verification at download time. This allows an attacker who is able to serve multiple new versions of root metadata (i.e. by a person-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates. This is fixed in version 0.12 and newer."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
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      "references": [
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        },
        {
          "tags": [
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          "url": "https://github.com/theupdateframework/tuf/pull/885"
        },
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          ],
          "url": "https://github.com/theupdateframework/tuf/releases/tag/v0.12.0"
        },
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          "url": "https://pypi.org/project/tuf"
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      "source": {
        "advisory": "GHSA-f8mr-jv2c-v8mg",
        "discovery": "UNKNOWN"
      },
      "title": "Invalid root may become trusted root in The Update Framework (TUF)",
      "x_legacyV4Record": {
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          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-15163",
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        },
        "affects": {
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                    {
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                "vendor_name": "theupdateframework"
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            }
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            "privilegesRequired": "LOW",
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            "userInteraction": "REQUIRED",
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              "url": "https://github.com/theupdateframework/tuf/security/advisories/GHSA-f8mr-jv2c-v8mg"
            },
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            },
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            },
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    "dateReserved": "2020-06-25T00:00:00",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

ghsa-f8mr-jv2c-v8mg

Vulnerability from github

Published

2020-09-09 17:29

Modified

2024-11-18 22:41

Severity ?

8.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
6.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Summary

Invalid root may become trusted root in The Update Framework (TUF)

Details

Impact

The Python TUF reference implementation tuf<0.12 will incorrectly trust a previously downloaded root metadata file which failed verification at download time. This allows an attacker who is able to serve multiple new versions of root metadata (i.e. by a man-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates.

While investigating the reported vulnerability, we discovered that the detailed client workflow was not fully implemented. Specifically, for step 1.3 the newly downloaded root metadata was not being verified with a threshold of keys specified in the new root metadata file. This missing step of the client workflow has been implemented in PR #1101, which is included in v0.14.0 of tuf.

Patches

A fix, is available in version 0.12 and newer.

Workarounds

No workarounds are known for this issue.

References

Pull request resolving the invalid root becoming trusted issue PR 885
Pull request implementing self verification of newly downloaded root metadata PR 1101

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "tuf"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-15163"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345",
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-09-09T17:27:31Z",
    "nvd_published_at": "2020-09-09T18:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nThe Python TUF reference implementation `tuf\u003c0.12` will incorrectly trust a previously downloaded root metadata file which failed verification at download time. This allows an attacker who is able to serve multiple new versions of root metadata (i.e. by a man-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates.\n\nWhile investigating the reported vulnerability, we discovered that the detailed client workflow was not fully implemented. Specifically, for step 1.3 the newly downloaded root metadata was not being verified with a threshold of keys specified in the new root metadata file.\nThis missing step of the client workflow has been implemented in [PR #1101](https://github.com/theupdateframework/tuf/pull/1101), which is included in [v0.14.0](https://github.com/theupdateframework/tuf/releases/tag/v0.14.0) of tuf.\n\n### Patches\nA [fix](https://github.com/theupdateframework/tuf/pull/885), is available in version [0.12](https://github.com/theupdateframework/tuf/releases/tag/v0.12.0) and newer.\n\n### Workarounds\nNo workarounds are known for this issue.\n\n### References\n* Pull request resolving the invalid root becoming trusted issue [PR 885](https://github.com/theupdateframework/tuf/pull/885)\n* Pull request implementing self verification of newly downloaded root metadata [PR 1101](https://github.com/theupdateframework/tuf/pull/1101)",
  "id": "GHSA-f8mr-jv2c-v8mg",
  "modified": "2024-11-18T22:41:33Z",
  "published": "2020-09-09T17:29:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/security/advisories/GHSA-f8mr-jv2c-v8mg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15163"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/pull/885"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/commit/3d342e648fbacdf43a13d7ba8886aaaf07334af7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/tuf/PYSEC-2020-145.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/theupdateframework/tuf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/theupdateframework/tuf/releases/tag/v0.12.0"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/tuf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Invalid root may become trusted root in The Update Framework (TUF)"
}

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-2020-145

Vulnerability from pysec

CVE-2020-15163 (GCVE-0-2020-15163)

Vulnerability from cvelistv5

ghsa-f8mr-jv2c-v8mg

Vulnerability from github

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature