Is CVE-2021-45079 in the CISA KEV catalog?

No. CVE-2021-45079 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-45079?

CVE-2021-45079 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2021-45079?

CVE-2021-45079 has an EPSS score of 2.76% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-45079?

Upgrade strongswan on debian 11 to 5.9.1-1+deb11u2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-45079

CRITICALEPSS 84th pctl

9.1

CVSS v3

NVD

Description

In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

strongswanDebian

Fixed in:5.9.1-1+deb11u2CVE-2021-45079

Fixed in:5.9.5-1CVE-2021-45079

libstrongswanUbuntu

Fixed in:5.1.2-0ubuntu2.11+esm2USN-5250-2

Fixed in:5.3.5-1ubuntu3.8+esm2USN-5250-2

Fixed in:5.6.2-1ubuntu2.8USN-5250-1

Fixed in:5.8.2-1ubuntu3.4USN-5250-1

strongswanUbuntu

Fixed in:5.1.2-0ubuntu2.11+esm2USN-5250-2

Fixed in:5.3.5-1ubuntu3.8+esm2USN-5250-2

Fixed in:5.6.2-1ubuntu2.8USN-5250-1

Fixed in:5.8.2-1ubuntu3.4USN-5250-1

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.76%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Other references1

strongswan.org

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

Embed a live status badge for CVE-2021-45079

Markdown

[![CVE-2021-45079](https://tridentstack.com/cve/badge/CVE-2021-45079.svg)](https://tridentstack.com/cve/CVE-2021-45079)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-45079"><img src="https://tridentstack.com/cve/badge/CVE-2021-45079.svg" alt="CVE-2021-45079"></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.