CVE-2020-15093

HIGH

tough < 0.7.1 - Cryptographic Signature Verification Bypass via Duplicate Signature

Title source: llm
STIX 2.1

Description

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.

References (4)

Core 4
Core References
Third Party Advisory x_refsource_misc
https://crates.io/crates/tough
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/theupdateframework/tuf/pull/974

Scores

CVSS v3 8.6
EPSS 0.0017
EPSS Percentile 38.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Details

CWE
CWE-347
Status published
Products (2)
amazon/tough < 0.7.1
crates.io/tough 0 - 0.7.1crates.io
Published Jul 09, 2020
Tracked Since Feb 18, 2026