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Ubuntu Security Notice USN-6484-1
November 16, 2023
openvpn vulnerabilities
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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