cvelistv5 - cve-2025-2886

CVE-2025-2886 (GCVE-0-2025-2886)

Vulnerability from cvelistv5 – Published: 2025-03-27 22:22 – Updated: 2025-10-14 18:23

Summary

Missing validation of terminating delegation causes the client to continue searching the defined delegation list, even after searching a terminating delegation. This could cause the client to fetch a target from an incorrect source, altering the target contents. Users should upgrade to tough version 0.20.0 or later and ensure any forked or derivative code is patched to incorporate the new fixes.

Severity ?

5.7 (Medium)


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

CWE

CWE-670 - Always-Incorrect Control Flow Implementation

Assigner

AMZN

References

URL

Tags

	https://github.com/awslabs/tough/security/advisor…	vendor-advisory
	https://aws.amazon.com/security/security-bulletin…	vendor-advisory
	https://github.com/awslabs/tough/releases/tag/tou…	patch

Impacted products

	Vendor	Product	Version
	AWS	tough	Affected: 0.1.0 , < 0.20.0 (semver)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-2886

Vulnerability from fkie_nvd - Published: 2025-03-27 23:15 - Updated: 2025-10-14 19:15

Severity ?

4.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N

Summary

References

URL	Tags
ff89ba41-3aa1-4d27-914a-91399e9639e5	https://aws.amazon.com/security/security-bulletins/AWS-2025-007/	Vendor Advisory
ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/awslabs/tough/releases/tag/tough-v0.20.0
ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/awslabs/tough/security/advisories/GHSA-v4wr-j3w6-mxqc	Vendor Advisory

Impacted products

	Vendor	Product	Version
	amazon	tough	*

JSON

To clipboard

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GHSA-V4WR-J3W6-MXQC

Vulnerability from github – Published: 2025-03-28 22:13 – Updated: 2025-10-14 21:58

Summary

tough terminating targets role delegations are not respected

Details

Summary

Delegations are a mechanism defined by the TUF specification that allow multiple different identities to provide and sign content within a single repository. Terminating delegations and delegation priority give a TUF repository unambiguous control over how overlapping delegations are resolved. tough erroneously will not terminate a search as required, and will accept information from a lower-priority delegation that should have been ignored.

Impact

When interacting with TUF repositories that use delegations, the tough client could fetch targets owned by the incorrect role. An actor which had delegated ownership of a subset of a TUF repository could provide arbitrary contents to tough clients for targets owned by the delegating identity.

Impacted versions: < v0.20.0

Patches

A fix for this issue is available in tough version 0.20.0 and later. Customers are advised to upgrade to version 0.20.0 or later and ensure any forked or derivative code is patched to incorporate the new fixes.

Workarounds

There is no recommended work around. Customers are advised to upgrade to version 0.20.0 or the latest version.

References

If you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our vulnerability reporting page [1] or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

[1] Vulnerability reporting page: https://aws.amazon.com/security/vulnerability-reporting

Acknowledgement

These issues were identified by the TUF-Conformance project. We would like to thank Google for collaborating on this issue through the coordinated vulnerability disclosure process.

Severity ?

4.2 (Medium)


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

5.7 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "tough"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.20.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-2886"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-670"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-28T22:13:00Z",
    "nvd_published_at": "2025-03-27T23:15:35Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nDelegations are a mechanism defined by the TUF specification that allow multiple different identities to provide and sign content within a single repository. Terminating delegations and delegation priority give a TUF repository unambiguous control over how overlapping delegations are resolved. tough erroneously will not terminate a search as required, and will accept information from a lower-priority delegation that should have been ignored.\n\n## Impact\n\nWhen interacting with TUF repositories that use delegations, the tough client could fetch targets owned by the incorrect role. An actor which had delegated ownership of a subset of a TUF repository could provide arbitrary contents to tough clients for targets owned by the delegating identity.\n\nImpacted versions: \u003c v0.20.0\n\n## Patches\n\nA fix for this issue is available in tough version 0.20.0 and later. Customers are advised to upgrade to version 0.20.0 or later and ensure any forked or derivative code is patched to incorporate the new fixes.\n\n## Workarounds\n\nThere is no recommended work around. Customers are advised to upgrade to version 0.20.0 or the latest version.\n\n## References\n\nIf you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our vulnerability reporting page [1] or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.\n\n\n[1] Vulnerability reporting page: https://aws.amazon.com/security/vulnerability-reporting\n\n## Acknowledgement\n\nThese issues were identified by the [TUF-Conformance project](https://github.com/theupdateframework/tuf-conformance). We would like to thank Google for collaborating on this issue through the coordinated vulnerability disclosure process.",
  "id": "GHSA-v4wr-j3w6-mxqc",
  "modified": "2025-10-14T21:58:53Z",
  "published": "2025-03-28T22:13:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/awslabs/tough/security/advisories/GHSA-v4wr-j3w6-mxqc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2886"
    },
    {
      "type": "WEB",
      "url": "https://github.com/awslabs/tough/commit/598111f88105a707ee68b0fa06c52da7176ea96a"
    },
    {
      "type": "WEB",
      "url": "https://aws.amazon.com/security/security-bulletins/AWS-2025-007"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/awslabs/tough"
    },
    {
      "type": "WEB",
      "url": "https://github.com/awslabs/tough/releases/tag/tough-v0.20.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "tough terminating targets role delegations are not respected"
}

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

CVE-2025-2886 (GCVE-0-2025-2886)

FKIE_CVE-2025-2886

GHSA-V4WR-J3W6-MXQC

Summary

Impact

Patches

Workarounds

References

Acknowledgement

Tags

Sightings

Nomenclature