CVE-2021-38195

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in the libsecp256k1 crate before 0.5.0 for Rust. It can verify an invalid signature because it allows the R or S parameter to be larger than the curve order, aka an overflow.

Se ha detectado un problema en la crate libsecp256k1 versiones anteriores a 0.5.0 para Rust. Puede verificar una firma no válida porque permite que el parámetro R o S sea mayor que el orden de la curva, lo que supone un desbordamiento

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-08 CVE Reserved
2021-08-08 CVE Published
2024-06-30 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (2)

URL	Tag	Source
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libsecp256k1/RUSTSEC-2021-0076.md	Third Party Advisory

URL	Date	SRC
https://rustsec.org/advisories/RUSTSEC-2021-0076.html	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Parity Search vendor "Parity"		Libsecp256k1 Search vendor "Parity" for product "Libsecp256k1"				< 0.5.0 Search vendor "Parity" for product "Libsecp256k1" and version " < 0.5.0"		rust		Affected