strongswan vulnerabilities

30 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 versions:

Ubuntu 17.04

libstrongswan - 5.5.1-1ubuntu3.1

strongswan - 5.5.1-1ubuntu3.1

Ubuntu 16.10

libstrongswan - 5.3.5-1ubuntu4.3

strongswan - 5.3.5-1ubuntu4.3

strongswan-plugin-gmp - 5.3.5-1ubuntu4.3

Ubuntu 16.04 LTS

libstrongswan - 5.3.5-1ubuntu3.3

strongswan - 5.3.5-1ubuntu3.3

strongswan-plugin-gmp - 5.3.5-1ubuntu3.3

Ubuntu 14.04 LTS

libstrongswan - 5.1.2-0ubuntu2.6

strongswan - 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