# CVE-2023-38710: libreswan: Libreswan is an implementation of IPsec and IKE for Linux

CVE-2023-38710 is fixed in libreswan on 1 platform, first by DEBIAN-CVE-2023-38710, released August 25, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-38710
- Priority: Routine
- CVSS: 6.5 (Moderate)
- EPSS: 0.0081
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 25, 2023

## Description

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).  Security Fix(es):  * libreswan: Invalid IKEv2 REKEY proposal causes restart (CVE-2023-38710)  * libreswan: Invalid IKEv1 Quick Mode ID causes restart (CVE-2023-38711)  * libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart (CVE-2023-38712)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.9 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libreswan Debian 13.5 (trixie) | 4.12-1 | [DEBIAN-CVE-2023-38710](https://patchblox.com/security/data/fix/linux/debian-cve-2023-38710.md) | Aug 25, 2023 |
| Linux | libreswan RHEL 8 | 0:4.12-2.el8 | [RHSA-2023:7052](https://patchblox.com/security/data/fix/linux/rhsa-2023-7052.md) | Nov 14, 2023 |
| Linux | libreswan RHEL 9 | 0:4.12-1.el9 | [RHSA-2023:6549](https://patchblox.com/security/data/fix/linux/rhsa-2023-6549.md) | Nov 7, 2023 |
| Linux | libreswan almalinux 8 | 4.12-2.el8 | [ALSA-2023:7052](https://patchblox.com/security/data/fix/linux/alsa-2023-7052.md) | Nov 14, 2023 |
| Linux | libreswan almalinux 9 | 4.12-1.el9 | [ALSA-2023:6549](https://patchblox.com/security/data/fix/linux/alsa-2023-6549.md) | Nov 7, 2023 |
| Linux | libreswan ol 8 | 0:4.12-2.0.1.el8 | [ELSA-2023-7052](https://patchblox.com/security/data/fix/linux/elsa-2023-7052.md) | Nov 17, 2023 |
| Linux | libreswan ol 9 | 0:4.12-1.0.1.el9 | [ELSA-2023-6549](https://patchblox.com/security/data/fix/linux/elsa-2023-6549.md) | Nov 11, 2023 |
| Linux | libreswan rocky 8 | 0:4.12-2.el8_10.3 | [RLSA-2023:7052](https://patchblox.com/security/data/fix/linux/rlsa-2023-7052.md) | May 21, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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