USN-6488-2: strongSwan vulnerability
14 December 2023
strongSwan could be made to crash or run programs if it received specially crafted network traffic.
Releases
Packages
- strongswan - IPsec VPN solution
Details
USN-6488-1 fixed a vulnerability in strongSwan. This update provides
the corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Florian Picca discovered that strongSwan incorrectly handled certain DH
public values. A remote attacker could use this issue to cause strongSwan
to crash, resulting in a denial of service, or possibly execute arbitrary
code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
-
libstrongswan
-
5.6.2-1ubuntu2.9+esm1
Available with Ubuntu Pro
-
strongswan
-
5.6.2-1ubuntu2.9+esm1
Available with Ubuntu Pro
Ubuntu 16.04
-
libstrongswan
-
5.3.5-1ubuntu3.8+esm4
Available with Ubuntu Pro
-
strongswan
-
5.3.5-1ubuntu3.8+esm4
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-6488-1: charon-cmd, strongswan-pki, libcharon-extauth-plugins, strongswan-nm, libcharon-extra-plugins, strongswan, strongswan-swanctl, strongswan-charon, strongswan-tnc-server, strongswan-scepclient, libstrongswan, libstrongswan-standard-plugins, strongswan-tnc-base, charon-systemd, strongswan-tnc-client, strongswan-starter, strongswan-tnc-ifmap, strongswan-tnc-pdp, libcharon-standard-plugins, libstrongswan-extra-plugins, strongswan-libcharon