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CVE-2024-2357

19
FAUCET Score

CVE-2024-2357 describes a denial-of-service vulnerability in Libreswan, specifically affecting IKEv2 connections configured with PreSharedKeys. If a connection cannot find a matching secret and is automatically added on startup, it can lead to repeated restarts of the Libreswan service. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and can be exploited remotely by an authenticated attacker, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
The Libreswan Project (Www.Libreswan.Org)Libreswan
>= 4.2, <= 4.12CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.94%
Probability of exploitation in next 30 days
EPSS Percentile
57.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0094 is in the 70th percentile among its peer group of 21,957 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

microsoftpatch availablevia msrc
Product: 19903-17086Fixed in: 4.14-1
microsoftpatch availablevia msrc
Product: cbl2 libreswan 4.14-2 on CBL Mariner 2.0Fixed in: 4.14-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: libreswan-0:4.9-3.el8_8.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libreswan-0:4.12-1.el9_3.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libreswan-0:4.12-2.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libreswan-0:4.12-2.el8_9.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.15Fixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.16Fixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.17Fixed in: libreswan-0:4.6-3.el9_0.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: libreswan-0:4.9-5.el9_2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: libreswan-0:4.5-1.el8_6.2
View patch

Vendor Advisories (2)

microsoft2024-Mar/CVE-2024-2357

IKEv2 misconfiguration can cause libreswan to abort and restart

Mar 12, 2024
redhatCVE-2024-2357Moderate

libreswan: Missing PreSharedKey for connection can cause crash

Mar 11, 2024

References

libreswan.org / security/CVE-2024-2357
lists.fedoraproject.org / archives/list/[email protected]/message/EJZJYFHKBIJ4ZK5GAWWFFR3AKJS6O5JX
lists.fedoraproject.org / archives/list/[email protected]/message/HEM46ALKF7NG6CAUKZ7KQERVOHWQIQKY
lists.fedoraproject.org / archives/list/[email protected]/message/TVQ7MZY6LFFGRWAJNTKKN2VSEFS2VPAR