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Observable Discrepancy in libsecp256k1-rs

Moderate severity GitHub Reviewed Published Aug 25, 2021 to the GitHub Advisory Database • Updated Feb 3, 2023

Package

cargo libsecp256k1-rs (Rust)

Affected versions

< 0.3.1

Patched versions

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.

References

Published by the National Vulnerability Database Jan 23, 2020
Reviewed Jul 27, 2021
Published to the GitHub Advisory Database Aug 25, 2021
Last updated Feb 3, 2023

Severity

Moderate
5.9
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2019-20399

GHSA ID

GHSA-7cqg-8449-rmfv

Source code

No known source code
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