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[USN-3339-2] OpenVPN vulnerability

Posted on 07 August 2017
Ubuntu Security

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Ubuntu Security Notice USN-3339-2
August 07, 2017

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in OpenVPN.

Software Description:
- openvpn: virtual private network software

Details:

USN-3339-1 fixed several issues in OpenVPN. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

=C2=A0Guido Vranken discovered that OpenVPN incorrectly handled an HTTP
=C2=A0proxy with NTLM authentication. A remote attacker could use this issu=
e
=C2=A0to cause OpenVPN clients to crash, resulting in a denial of service,
=C2=A0or possibly expose sensitive memory contents. (CVE-2017-7520)

Update instructions:

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

Ubuntu 12.04 ESM:
=C2=A0 openvpn=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=C2=
=A0=C2=A0=C2=A02.2.1-8ubuntu1.5

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

References:
=C2=A0 https://www.ubuntu.com/usn/usn-3339-2
=C2=A0 https://www.ubuntu.com/usn/usn-3339-1
=C2=A0 CVE-2017-7520

 

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