Home/CVE/The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signat
CVE

CVE-2020-15093

The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signat

The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A fix is available in version 0.7.1.

CVE-2020-6174 is assigned to the same vulnerability in the TUF reference implementation.

HIGH · CVSS 8.6 EPSS 0.00174
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
CWE-347Improper Verification of Cryptographic Signature
▤

Affected Products & Versions

1
amazon tough< 0.7.1
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
crates.io tough HIGH fixed in 0.7.1
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Jul 2020 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://crates.io/crates/toughThird Party Advisory
https://github.com/awslabs/tough/security/advisories/GHSA-5q2r-92f9-4m49Third Party Advisory
https://github.com/theupdateframework/tuf/commit/2977188139d065ff3356c3cb4aec60c582b57e0ePatchThird Party Advisory
https://github.com/theupdateframework/tuf/pull/974Issue TrackingPatchThird Party Advisory
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