1. Ubuntu Security Notices
  2. USN-3397-1

USN-3397-1: strongSwan vulnerability

Publication date

21 August 2017

Overview

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

Releases

Packages

Details

It was discovered that strongSwan incorrectly handled verifying
specific RSA signatures. A remote attacker could use this issue
to cause strongSwan to crash, resulting in a denial of service.

It was discovered that strongSwan incorrectly handled verifying
specific RSA signatures. A remote attacker could use this issue
to cause strongSwan to crash, resulting in a denial of service.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.04 zesty libstrongswan –  5.5.1-1ubuntu3.2
strongswan –  5.5.1-1ubuntu3.2
16.04 xenial libstrongswan –  5.3.5-1ubuntu3.4
strongswan –  5.3.5-1ubuntu3.4
14.04 trusty libstrongswan –  5.1.2-0ubuntu2.7
strongswan –  5.1.2-0ubuntu2.7

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›