CRITICAL 9.8 Microsoft

CVE-2023-41913

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.

Microsoft Security Update 2023-Dec: 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 Products

azl3 strongswan 5.9.11-1 on Azure Linux 3.0
cbl2 strongswan 5.9.10-3 on CBL Mariner 2.0
azl3 strongswan 5.9.12-1 on Azure Linux 3.0

References

Published: 2023-12-12 · Source: Microsoft · Feed updated: 2026-09-03

This critical severity vulnerability with a CVSS score of 9.8 was published on 2023-12-12 via Microsoft. Affected: azl3 strongswan 5.9.11-1 on Azure Linux 3.0, cbl2 strongswan 5.9.10-3 on CBL Mariner 2.0, azl3 strongswan 5.9.12-1 on Azure Linux 3.0.

Risk Timeline

CVE Disclosed2023-12-12 · 995 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-41913

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2023-41913

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