CVE-2020-15093 – tough

Package

Manager: cargo
Name: tough
Vulnerable Version: >=0 <0.7.1

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

EPSS: 0.0012 pctl0.31608

Details

Improper verification of signature threshold in tough ## Impact The tough library, prior to 0.7.1, does not properly verify the uniqueness of keys in the signatures provided to meet the threshold of cryptographic signatures. It allows someone with access to a valid signing key to create multiple valid signatures in order to circumvent TUF requiring a minimum threshold of unique keys before the metadata is considered valid. AWS would like to thank Erick Tryzelaar of the Google Fuchsia Team for reporting this issue. ## Patches A fix is available in version 0.7.1. ## Workarounds No workarounds to this issue are known. ## References CVE-2020-6174 is assigned to the same issue in the TUF reference implementation. https://github.com/theupdateframework/tuf/pull/974 https://nvd.nist.gov/vuln/detail/CVE-2020-6174 ## For more information If you have any questions or comments about this advisory, [contact AWS Security](https://aws.amazon.com/security/vulnerability-reporting/) at [aws-security@amazon.com](mailto:aws-security@amazon.com).

Metadata

Created: 2021-08-25T20:56:55Z
Modified: 2021-10-27T17:03:38Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-5q2r-92f9-4m49/GHSA-5q2r-92f9-4m49.json
CWE IDs: ["CWE-347"]
Alternative ID: GHSA-5q2r-92f9-4m49
Finding: F163
Auto approve: 1