[USN-4933-1] OpenVPN vulnerabilities
marc.deslauriers at canonical.com
Tue May 4 12:18:12 UTC 2021
Ubuntu Security Notice USN-4933-1
May 04, 2021
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
everal security issues were fixed in OpenVPN.
- openvpn: virtual private network software
It was discovered that OpenVPN incorrectly handled certain data channel v2
packets. A remote attacker could possibly use this issue to inject packets
using a victim's peer-id. This issue only affected Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2020-11810)
It was discovered that OpenVPN incorrectly handled deferred authentication.
When a server is configured to use deferred authentication, a remote
attacker could possibly use this issue to bypass authentication and access
control channel data. (CVE-2020-15078)
The problem can be corrected by updating your system to the following
Ubuntu 20.04 LTS:
Ubuntu 18.04 LTS:
In general, a standard system update will make all the necessary changes.
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