USN-4263-1

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Source
https://ubuntu.com/security/notices/USN-4263-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4263-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4263-1
Upstream
Related
Published
2020-02-03T13:19:16.858872Z
Modified
2025-10-13T04:35:04Z
Summary
sudo vulnerability
Details

Joe Vennix discovered that Sudo incorrectly handled memory operations when the pwfeedback option is enabled. A local attacker could possibly use this issue to obtain unintended access to the administrator account.

References

Affected packages

Ubuntu:16.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo@1.8.16-0ubuntu1.9?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.16-0ubuntu1.9

Affected versions

1.*

1.8.12-1ubuntu3
1.8.16-0ubuntu1
1.8.16-0ubuntu1.1
1.8.16-0ubuntu1.2
1.8.16-0ubuntu1.3
1.8.16-0ubuntu1.4
1.8.16-0ubuntu1.5
1.8.16-0ubuntu1.6
1.8.16-0ubuntu1.7
1.8.16-0ubuntu1.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.8.16-0ubuntu1.9",
            "binary_name": "sudo"
        },
        {
            "binary_version": "1.8.16-0ubuntu1.9",
            "binary_name": "sudo-ldap"
        }
    ],
    "availability": "No subscription required"
}

Database specific 

{
    "cves_map": {
        "cves": [
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "low",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2019-18634"
            }
        ],
        "ecosystem": "Ubuntu:16.04:LTS"
    }
}

Ubuntu:18.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo@1.8.21p2-3ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.21p2-3ubuntu1.2

Affected versions

1.*

1.8.20p2-1ubuntu1
1.8.21p2-2ubuntu1
1.8.21p2-3ubuntu1
1.8.21p2-3ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.8.21p2-3ubuntu1.2",
            "binary_name": "sudo"
        },
        {
            "binary_version": "1.8.21p2-3ubuntu1.2",
            "binary_name": "sudo-ldap"
        }
    ],
    "availability": "No subscription required"
}

Database specific 

{
    "cves_map": {
        "cves": [
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "low",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2019-18634"
            }
        ],
        "ecosystem": "Ubuntu:18.04:LTS"
    }
}