strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKE_SA_INIT message.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade strongswan | Mar 26, 2024 | Dec 7, 2023 |
| Debian | — | Upgrade strongswan | Nov 27, 2023 | Nov 27, 2023 |
| Freebsd | — | Upgrade strongswan | Dec 10, 2025 | Nov 24, 2023 |
| Gentoo Linux | — | Upgrade net-vpn/strongswan. | Jul 9, 2025 | Dec 7, 2023 |
| Suse | — | Upgrade strongswan-ipsecUpgrade strongswan-libs0Upgrade strongswan-mysqlUpgrade strongswan-sqliteUpgrade strongswan-docUpgrade strongswanUpgrade strongswan-hmacUpgrade strongswan-nm | Nov 22, 2023 | Nov 21, 2023 |
| Ubuntu | — | Upgrade libstrongswan (Ubuntu Pro)Upgrade strongswanUpgrade strongswan (Ubuntu Pro)Upgrade libstrongswan | Nov 21, 2023 | Nov 20, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Dec 7, 2023 |
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