01 Record

CVE-2024-3652

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

MediumPUBLISHEDCNA: libreswan

CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 Description

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

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 56.3% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-04-11 01:32Z2 YR AGO

Last updated

2026-02-27 15:19Z8 MO AGO

Reserved

2024-04-11

Assigning CNA

libreswan

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

CWE-404Improper Resource Shutdown or ReleaseClass
CWE-617Reachable AssertionBase

Data version

5.2

Document digest

70756bf01b47c9416bd4d9f4c0e196dc468d29bbf3b3060b054d28aa9654d7c9

05 Affected products

VendorProductVersionsPlatforms

The Libreswan Project (www.libreswan.org)libreswan3.22 to 4.14—

06 References

libreswan.orgCVE-2024-3652https://libreswan.org/security/CVE-2024-3652vendor-advisory
www.openwall.comhttp://www.openwall.com/lists/oss-security/2024/04/18/2

07 Remediation

This issue is fixed in 4.15 and all later versions.

08 Fixed in

AlmaLinux 8

libreswan
Fixed in 4.12-2.el8_10.4

AlmaLinux 9

libreswan
Fixed in 4.12-2.el9_4.1

CloudLinux 8

libreswan
Fixed in 4.12-2.el8_10.4

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

CloudLinux 9

libreswan
Fixed in 4.12-2.el9_4.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Debian 12

libreswan
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

libreswan
Fixed in 4.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

libreswan
Fixed in 4.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.