Is CVE-2021-43177 in the CISA KEV catalog?

No. CVE-2021-43177 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43177?

CVE-2021-43177 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-43177?

CVE-2021-43177 has an EPSS score of 0.85% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43177?

Upgrade ruby-devise-two-factor on debian 12 to 4.0.2-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-43177

MEDIUM

5.3

CVSS v3

NVD

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)

CWE-254

How to fix

Remediation Available

ruby-devise-two-factorDebian

Fixed in:4.0.2-1CVE-2021-43177

ruby-devise-two-factorUbuntu

Fixed in:3.1.0-2ubuntu0.1~esm1USN-7050-1

Fixed in:4.0.0-2ubuntu0.1~esm1USN-7050-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.85%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Third-Party Advisory1

github.com

Embed a live status badge for CVE-2021-43177

Markdown

[![CVE-2021-43177](https://tridentstack.com/cve/badge/CVE-2021-43177.svg)](https://tridentstack.com/cve/CVE-2021-43177)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-43177"><img src="https://tridentstack.com/cve/badge/CVE-2021-43177.svg" alt="CVE-2021-43177"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.