CVE-2021-43177

Publication date 11 April 2022

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

As a result of an incomplete fix for CVE-2015-7225, in versions of devise-two-factor prior to 4.0.2 it is possible to reuse a One-Time-Password (OTP) for one (and only one) immediately trailing interval. CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ruby-devise-two-factor	25.10 questing	Not in release
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Ignored end of life, was needed
	22.04 LTS jammy	Fixed 4.0.0-2ubuntu0.1~esm1
	21.10 impish	Ignored end of life
	20.04 LTS focal	Fixed 3.1.0-2ubuntu0.1~esm1
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Not in release

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Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-7050-1
Devise-Two-Factor vulnerabilities
1 October 2024