USN-4263-1

See a problem?
Please try reporting it to the source first.
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
2020-02-03T13:19:16Z
Modified
2026-02-10T04:41:46Z
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 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4263-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ],
            "id": "CVE-2019-18634"
        }
    ]
}

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 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4263-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ],
            "id": "CVE-2019-18634"
        }
    ]
}