libsecp256k1 contains side-channel timing attack · CVE-2019-25003 · GitHub Advisory Database · GitHub

libsecp256k1 contains side-channel timing attack

High severity GitHub Reviewed Published Aug 25, 2021 to the GitHub Advisory Database • Updated Aug 25, 2023

Package

libsecp256k1 (Rust)

Affected versions

< 0.3.1

Patched versions

0.3.1

Description

Versions of libsecp256k1 prior to 0.3.1 did not execute Scalar::check_overflow in constant time. This allows an attacker to potentially leak information via a timing attack. The flaw was corrected by modifying Scalar::check_overflow to execute in constant time.

References

Reviewed Aug 19, 2021

Published to the GitHub Advisory Database Aug 25, 2021

Last updated Aug 25, 2023

Severity

High

7.5

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

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