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:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-9022,

CVE-2017-9023

Source: USN-3301-1: strongSwan vulnerabilities

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