Advisory Published

USN-6860-1: OpenVPN vulnerabilities

First published: Tue Jul 02 2024(Updated: )

Reynir Björnsson discovered that OpenVPN incorrectly handled terminating client connections. A remote authenticated client could possibly use this issue to keep the connection active, bypassing certain security policies. This issue only affected Ubuntu 23.10, and Ubuntu 24.04 LTS. (CVE-2024-28882) 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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/openvpn<2.6.9-1ubuntu4.1
2.6.9-1ubuntu4.1
Ubuntu Ubuntu=24.04
All of
ubuntu/openvpn<2.6.5-0ubuntu1.2
2.6.5-0ubuntu1.2
Ubuntu Ubuntu=23.10
All of
ubuntu/openvpn<2.5.9-0ubuntu0.22.04.3
2.5.9-0ubuntu0.22.04.3
Ubuntu Ubuntu=22.04
All of
ubuntu/openvpn<2.4.12-0ubuntu0.20.04.2
2.4.12-0ubuntu0.20.04.2
Ubuntu Ubuntu=20.04

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