USN-3301-1: strongSwan vulnerabilities

Ubuntu Security Notice USN-3301-1

30th May, 2017

strongswan vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 17.04
• Ubuntu 16.10
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

strongSwan could be made to crash or hang if it received specially crafted network traffic.

Software description

• strongswan - IPsec VPN solution

Details

It was discovered that the strongSwan gmp plugin incorrectly validated RSA
public keys. A remote attacker could use this issue to cause strongSwan to
crash, resulting in a denial of service. (CVE-2017-9022)

It was discovered that strongSwan incorrectly parsed ASN.1 CHOICE types. A
remote attacker could use this issue to cause strongSwan to hang, resulting
in a denial of service. (CVE-2017-9023)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 17.04:

libstrongswan 5.5.1-1ubuntu3.1

strongswan 5.5.1-1ubuntu3.1

Ubuntu 16.10:

strongswan 5.3.5-1ubuntu4.3

libstrongswan 5.3.5-1ubuntu4.3

strongswan-plugin-gmp 5.3.5-1ubuntu4.3

Ubuntu 16.04 LTS:

strongswan 5.3.5-1ubuntu3.3

libstrongswan 5.3.5-1ubuntu3.3

strongswan-plugin-gmp 5.3.5-1ubuntu3.3

Ubuntu 14.04 LTS:

strongswan 5.1.2-0ubuntu2.6

libstrongswan 5.1.2-0ubuntu2.6

strongswan-plugin-gmp 5.1.2-0ubuntu2.6

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

In general, a standard system update will make all the necessary changes.

References

CVE-2017-9022, CVE-2017-9023

from Ubuntu Security Notices http://ift.tt/2s9YRcB