USN-4933-1

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Source
https://ubuntu.com/security/notices/USN-4933-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4933-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4933-1
Upstream
Related
Published
2021-05-04T11:59:09.119137Z
Modified
2025-10-13T04:35:28Z
Summary
openvpn vulnerabilities
Details

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)

References

Affected packages

Ubuntu:18.04:LTS / openvpn

Package

Name
openvpn
Purl
pkg:deb/ubuntu/openvpn@2.4.4-2ubuntu1.5?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.4-2ubuntu1.5

Affected versions

2.*

2.4.3-4ubuntu1
2.4.4-1ubuntu1
2.4.4-2ubuntu1
2.4.4-2ubuntu1.1
2.4.4-2ubuntu1.2
2.4.4-2ubuntu1.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.4.4-2ubuntu1.5",
            "binary_name": "openvpn"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "low"
                    }
                ],
                "id": "CVE-2020-11810"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2020-15078"
            }
        ]
    }
}

Ubuntu:20.04:LTS / openvpn

Package

Name
openvpn
Purl
pkg:deb/ubuntu/openvpn@2.4.7-1ubuntu2.20.04.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.7-1ubuntu2.20.04.2

Affected versions

2.*

2.4.7-1ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.4.7-1ubuntu2.20.04.2",
            "binary_name": "openvpn"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "low"
                    }
                ],
                "id": "CVE-2020-11810"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2020-15078"
            }
        ]
    }
}