CVE Vulnerability

CVE-2021-38195

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://rustsec.org/advisories/RUSTSEC-2021-0076.html Exploit Issue Tracking
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/libsecp256k1/RUSTSEC-2021-0076.md Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:parity:libsecp256k1:*:*:*:*:*:rust:*:*
Information

Published : 2021-08-08 06:15

Updated : 2021-08-16 04:51

NVD link : CVE-2021-38195

Mitre link : CVE-2021-38195

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature