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CVE-2024-3652

22
FAUCET Score

CVE-2024-3652 is a medium-severity denial-of-service vulnerability affecting Libreswan, specifically when using IKEv1 without an explicit "esp=" line. An attacker can trigger an assertion failure and crash the Libreswan daemon by requesting AES-GMAC, leading to service disruption. While the CVSS score is 6.5, indicating a medium severity, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.22, < 4.15CPE matchmatch criteria
cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*

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
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
52.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 64th percentile among its peer group of 21,951 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 (20)

microsoftpatch availablevia msrc
Product: cbl2 libreswan 4.14-2 on CBL Mariner 2.0Fixed in: 4.14-2
microsoftpatch availablevia msrc
Product: 19899-17084Fixed in: 4.15-1
microsoftpatch availablevia msrc
Product: 19903-17086Fixed in: 4.14-2
microsoftpatch availablevia msrc
Product: 17755-17084Fixed in: 4.15-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 4.14-2
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 4.14-2
microsoftpatch availablevia msrc
Product: azl3 libreswan 4.15-1 on Azure Linux 3.0Fixed in: 4.15-1
microsoftpatch availablevia msrc
Product: azl3 libreswan 4.7-7 on Azure Linux 3.0Fixed in: 4.15-1
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 Enterprise Linux 8Fixed in: libreswan-0:4.12-2.el8_10.4
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 8.6 Advanced Mission Critical Update SupportFixed in: libreswan-0:4.5-1.el8_6.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: libreswan-0:4.5-1.el8_6.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: libreswan-0:4.5-1.el8_6.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: libreswan-0:4.9-3.el8_8.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libreswan-0:4.12-2.el9_4.1
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_0.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: libreswan-0:4.9-5.el9_2.2
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: libreswan

Vendor Advisories (3)

microsoft2024-Oct/CVE-2024-3652

CVE-2024-3652

Oct 8, 2024
redhatCVE-2024-3652Moderate

libreswan: IKEv1 default AH/ESP responder can crash and restart

Apr 15, 2024
microsoft2024-Apr/CVE-2024-3652Moderate

IKEv1 default AH/ESP responder can cause libreswan to abort and restart

Apr 9, 2024

References

libreswan.org / security/CVE-2024-3652
Third Party Advisory
openwall.com / lists/oss-security/2024/04/18/2
Mailing List