GHSA-j8x2-777p-23fc: Tough Tough Cyclic Delegation Graphs Are Vulnerability

Q: What is GHSA-j8x2-777p-23fc?

GHSA-j8x2-777p-23fc is a security vulnerability in Tough involving tough cyclic delegation graphs are not detected under General Security Weakness.

Q: Which Tough versions are affected?

Affected versions include releases prior to 0.20.0 across affected packages: tough.

Q: What version fixes GHSA-j8x2-777p-23fc?

Upgrading to 0.20.0 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is tough affected?

Yes, tough is affected in releases prior to 0.20.0. Upgrade your dependency to 0.20.0 or later.

Q: What is the CVSS score of GHSA-j8x2-777p-23fc?

GHSA-j8x2-777p-23fc has a CVSS v3.1 base score of 2.7 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

Q: What CWE is associated with GHSA-j8x2-777p-23fc?

GHSA-j8x2-777p-23fc is classified under General Security Weakness.

Q: How can I check crates.io dependencies for GHSA-j8x2-777p-23fc?

Run the dependency tree command: 'inspect dependencies for tough'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

LOW

CVSS 2.7

Published 2025-03-28

Advisory Summary

GHSA-j8x2-777p-23fc is a LOW (CVSS 2.7) tough cyclic delegation graphs are vulnerability (General Security Weakness) affecting Tough libraries in the crates.io ecosystem. The issue involves tough cyclic delegation graphs are not detected. Remediation is available by upgrading affected packages to version 0.20.0.

GHSA-j8x2-777p-23fc at a Glance

CVE Identifier N/A

GHSA Identifier GHSA-j8x2-777p-23fc

Severity LOW

CVSS v3.1 Base Score 2.7

CWE Classification General Security Weakness

Affected Product Tough

Package Ecosystem crates.io

Published Date 2025-03-28

Last Updated 2025-04-02

Security Impact

CVSS: 2.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required High (PR:H)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality None (C:N)

Integrity Low (I:L)

Availability None (A:N)

How to Fix GHSA-j8x2-777p-23fc

To remediate this vulnerability, upgrade all affected Tough dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

tough fixed: 0.20.0

Upgrade tough to 0.20.0

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for tough

How to Check if You Are Affected

To determine whether your application is affected by GHSA-j8x2-777p-23fc, inspect your project dependencies for Tough:

inspect dependencies for tough

Analyze the terminal output to locate any version of Tough in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.20.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Tough, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary In a TUF repository, the targets role’s signature indicates which target files are trusted by clients. The role can delegate full or partial trust to other roles, meaning that that role is trusted to sign target file metadata. Delegated roles can further delegate trust to other delegated roles. When searching for metadata about a given target, tough failed to detect cyclical role delegations. ## Impact When interacting with TUF repositories which contain cyclical role delegations, tough will fail to detect the cycles and will exhaust its stack while recursively searching the delegation graph. The exhausted call stack will cause the process to abort. 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](mailto: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](https://github.com/theupdateframework/tuf-conformance). We would like to thank Google for collaborating on this issue through the coordinated vulnerability disclosure process.

GHSA-j8x2-777p-23fc Affected Tough Versions

1 component(s)

Fixed Versions:

0.20.0

Product / Package	Ecosystem	Affected Versions	Fixed Version
tough	crates.io	< 0.20.0	0.20.0

References

GitHub Advisory / Wiki ADVISORY

https://github.com/awslabs/tough/security/advisories/GHSA-j8x2-777p-23fc

Security Fix Commit FIX COMMIT

https://github.com/awslabs/tough/commit/c5ee1718e630fdedc5676bf71b5bef10e4c7f91c

Tough Security Information SECURITY

https://aws.amazon.com/security/security-bulletins/AWS-2025-007

Tough Source Repository REPOSITORY

https://github.com/awslabs/tough

Frequently Asked Questions

What is GHSA-j8x2-777p-23fc?

GHSA-j8x2-777p-23fc is a security vulnerability in Tough involving tough cyclic delegation graphs are not detected under General Security Weakness.

Which Tough versions are affected?

Affected versions include releases prior to 0.20.0 across affected packages: tough.

What version fixes GHSA-j8x2-777p-23fc?

Upgrading to 0.20.0 (or the latest patched release for your respective branch) resolves the vulnerability.

Is tough affected?

Yes, tough is affected in releases prior to 0.20.0. Upgrade your dependency to 0.20.0 or later.

What is the CVSS score of GHSA-j8x2-777p-23fc?

GHSA-j8x2-777p-23fc has a CVSS v3.1 base score of 2.7 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

What CWE is associated with GHSA-j8x2-777p-23fc?

GHSA-j8x2-777p-23fc is classified under General Security Weakness.

How can I check crates.io dependencies for GHSA-j8x2-777p-23fc?

Run the dependency tree command: 'inspect dependencies for tough'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j8x2-777p-23fc",
  "modified" : "2025-04-02T23:02:55Z",
  "published" : "2025-03-28T22:13:16Z",
  "aliases" : [ ],
  "summary" : "tough cyclic delegation graphs are not detected",
  "details" : "## Summary\n\nIn a TUF repository, the targets role’s signature indicates which target files are trusted by clients. The role can delegate full or partial trust to other roles, meaning that that role is trusted to sign target file metadata. Delegated roles can further delegate trust to other delegated roles. When searching for metadata about a given target, tough failed to detect cyclical role delegations.\n\n## Impact\n\nWhen interacting with TUF repositories which contain cyclical role delegations, tough will fail to detect the cycles and will exhaust its stack while recursively searching the delegation graph. The exhausted call stack will cause the process to abort.\n\nImpacted versions: < 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "tough"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.20.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/awslabs/tough/security/advisories/GHSA-j8x2-777p-23fc"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/awslabs/tough/commit/c5ee1718e630fdedc5676bf71b5bef10e4c7f91c"
  }, {
    "type" : "WEB",
    "url" : "https://aws.amazon.com/security/security-bulletins/AWS-2025-007"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/awslabs/tough"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-28T22:13:16Z",
    "nvd_published_at" : null
  }
}

CVSS V3

2.7 LOW