Reported

January 22, 2020

Issued

September 9, 2021 (last modified: September 10, 2021)

Package

libsecp256k1-rs (crates.io)

Type

Vulnerability

Categories

• crypto-failure

Aliases

• CVE-2019-20399
• GHSA-7cqg-8449-rmfv

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-20399

CVSS Score

5.9 MEDIUM

CVSS Details

Attack vector

Network

Attack complexity

High

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Patched

• >=0.3.1

Description

A timing vulnerability in the Scalar::check_overflow function in Parity libsecp256k1-rs before 0.3.1 potentially allows an attacker to leak information via a side-channel attack.

Advisory available under CC0-1.0 license.