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[USN-3397-1] strongSwan vulnerability

Posted on 21 August 2017
Ubuntu Security

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Ubuntu Security Notice USN-3397-1
August 21, 2017

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

- Ubuntu 17.04
- 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 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:

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

Ubuntu 17.04:
=C2=A0 libstrongswan=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A05.5.1-1ubuntu3.=
2
=C2=A0 strongswan=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
5.5.1-1ubuntu3.2

Ubuntu 16.04 LTS:
=C2=A0 libstrongswan=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A05.3.5-1ubuntu3.=
4
=C2=A0 strongswan=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
5.3.5-1ubuntu3.4

Ubuntu 14.04 LTS:
=C2=A0 libstrongswan=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A05.1.2-0ubuntu2.=
7
=C2=A0 strongswan=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
5.1.2-0ubuntu2.7

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

References:
=C2=A0 https://www.ubuntu.com/usn/usn-3397-1
=C2=A0 CVE-2017-11185

Package Information:
=C2=A0 https://launchpad.net/ubuntu/+source/strongswan/5.5.1-1ubuntu3.2
=C2=A0 https://launchpad.net/ubuntu/+source/strongswan/5.3.5-1ubuntu3.4
=C2=A0 https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu2.7

 

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