========================================================================== Ubuntu Security Notice USN-7340-1 March 11, 2025
openvpn vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in OpenVPN.
Software Description:
- openvpn: virtual private network software
Details:
It was discovered that OpenVPN did not perform proper input validation
when generating a TLS key under certain configuration, which could lead to
a buffer overflow. An attacker could possibly use this issue to cause a
denial of service or execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS. (CVE-2017-12166)
Reynir Björnsson discovered that OpenVPN incorrectly handled certain
control channel messages with nonprintable characters. A remote attacker
could possibly use this issue to cause OpenVPN to consume resources, or
fill up log files with garbage, leading to a denial of service.
(CVE-2024-5594)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS
openvpn 2.4.4-2ubuntu1.7+esm1
Available with Ubuntu Pro
Ubuntu 16.04 LTS
openvpn 2.3.10-1ubuntu2.2+esm2
Available with Ubuntu Pro
Ubuntu 14.04 LTS
openvpn 2.3.2-7ubuntu3.2+esm2
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7340-1
CVE-2017-12166, CVE-2024-5594
OpenPGP_signature.asc
Description: OpenPGP digital signature
