Debian Security Advisory
DSA-5560-1 strongswan -- security update
- Date Reported:
- 20 Nov 2023
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2023-41913.
- More information:
Florian Picca reported a bug in the charon-tkm daemon in strongSwan an IKE/IPsec suite.
The TKM-backed version of the charon IKE daemon (charon-tkm) doesn't check the length of received Diffie-Hellman public values before copying them to a fixed-size buffer on the stack, causing a buffer overflow that could potentially be exploited for remote code execution by sending a specially crafted and unauthenticated IKE_SA_INIT message.
For the oldstable distribution (bullseye), this problem has been fixed in version 5.9.1-1+deb11u4.
For the stable distribution (bookworm), this problem has been fixed in version 5.9.8-5+deb12u1.
We recommend that you upgrade your strongswan packages.
For the detailed security status of strongswan please refer to its security tracker page at: https://security-tracker.debian.org/tracker/strongswan