CVE-2023-41913
CRITICAL9.8EPSS 5.5%strongswan - security update
Published: 12/7/2023Modified: 4/28/2026
Description
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.
Affected packages (4)
- Alpine/strongswanfrom 0, < 5.9.12-r0
- Debian/strongswanfrom 0, < 5.9.1-1+deb11u4
- Debian/strongswanfrom 0, < 5.7.2-1+deb10u4
- Debian/strongswanfrom 0, < 5.9.1-1+deb11u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |