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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

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

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

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Configurations

Configuration 1 (hide)

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

Information

Published : 2021-08-07 23:15

Updated : 2021-08-16 09:51

NVD link : CVE-2021-38195

Mitre link : CVE-2021-38195

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

parity

libsecp256k1

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