==========================================================================
Ubuntu Security Notice USN-3774-1
October 01, 2018
strongswan vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
strongSwan could be made to crash or run programs if it received specially
crafted network traffic.
Software Description:
– strongswan: IPsec VPN solution
Details:
It was discovered that strongSwan incorrectly handled signature validation
in the gmp plugin. 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 LTS:
libstrongswan 5.6.2-1ubuntu2.3
strongswan 5.6.2-1ubuntu2.3
Ubuntu 16.04 LTS:
libstrongswan 5.3.5-1ubuntu3.8
strongswan 5.3.5-1ubuntu3.8
Ubuntu 14.04 LTS:
libstrongswan 5.1.2-0ubuntu2.11
strongswan 5.1.2-0ubuntu2.11
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3774-1
CVE-2018-17540
Package Information:
https://launchpad.net/ubuntu/+source/strongswan/5.6.2-1ubuntu2.3
https://launchpad.net/ubuntu/+source/strongswan/5.3.5-1ubuntu3.8
https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu2.11
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