[USN-6484-1] OpenVPN vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-6484-1
November 16, 2023

openvpn vulnerabilities
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 23.04

Summary:

Several security issues were fixed in OpenVPN.

Software Description:
- openvpn: virtual private network software

Details:

It was discovered that OpenVPN incorrectly handled the --fragment option
in certain configurations. A remote attacker could possibly use this issue
to cause OpenVPN to crash, resulting in a denial of service.
(CVE-2023-46849)

It was discovered that OpenVPN incorrectly handled certain memory
operations. A remote attacker could use this issue to cause OpenVPN to
crash, obtain sensitive information, or possibly execute arbitrary code.
(CVE-2023-46850)

Update instructions:

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

Ubuntu 23.10:
   openvpn                         2.6.5-0ubuntu1.1

Ubuntu 23.04:
   openvpn                         2.6.1-1ubuntu1.1

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

References:
   https://ubuntu.com/security/notices/USN-6484-1
   CVE-2023-46849, CVE-2023-46850

Package Information:
   https://launchpad.net/ubuntu/+source/openvpn/2.6.5-0ubuntu1.1
   https://launchpad.net/ubuntu/+source/openvpn/2.6.1-1ubuntu1.1

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