Reported

May 9, 2022

Issued

May 9, 2022 (last modified: June 13, 2023)

Package

totp-rs (crates.io)

Type

Vulnerability

Categories

• crypto-failure

Keywords

#side-channel #timing-attack

Aliases

• CVE-2022-29185
• GHSA-8vxv-2g8p-2249

References

• https://github.com/constantoine/totp-rs/security/advisories/GHSA-8vxv-2g8p-2249

CVSS Score

4.2 MEDIUM

CVSS Details

Attack vector

Network

Attack complexity

High

Privileges required

High

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS Vector

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

Patched

• >=1.1.0

Affected Functions

Version

totp_rs::TOTP::check

• <1.1.0

Description

Affecting versions did not compare tokens in constant time, which could make it possible for an attacker to guess the 2fa token of a user.

This has been fixed by using using the crate constant_time_eq for comparison.

Advisory available under CC0-1.0 license.