// For flags

CVE-2020-15093

Improper verification of signature threshold in tough

Severity Score

8.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

La biblioteca tough (Rust/crates.io) anterior a la versión 0.7.1, no verifica apropiadamente el umbral de firmas criptográficas. Permite a un atacante duplicar una firma válida a fin de eludir TUF que requiere un umbral mínimo de firmas únicas antes de que los metadatos se consideraran válidos. Una corrección está disponible en la versión 0.7.1. El CVE-2020-6174 es asignado a la misma vulnerabilidad en la implementación de la referencia TUF

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-06-25 CVE Reserved
  • 2020-07-09 CVE Published
  • 2024-05-13 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Amazon
Search vendor "Amazon"
Tough
Search vendor "Amazon" for product "Tough"
< 0.7.1
Search vendor "Amazon" for product "Tough" and version " < 0.7.1"
rust
Affected