USN-4967-2

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Source
https://ubuntu.com/security/notices/USN-4967-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4967-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4967-2
Upstream
Related
Published
2021-05-27T13:12:38.963761Z
Modified
2025-10-13T04:35:30Z
Summary
nginx vulnerability
Details

USN-4967-1 fixed a vulnerability in nginx. This update provides the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM.

Original advisory details:

Luis Merino, Markus Vervier, and Eric Sesterhenn discovered that nginx incorrectly handled responses to the DNS resolver. A remote attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:Pro:14.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.4.6-1ubuntu3.9+esm2?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.6-1ubuntu3.9+esm2

Affected versions

1.*

1.4.1-3ubuntu1
1.4.3-2ubuntu1
1.4.4-1ubuntu1
1.4.4-2ubuntu1
1.4.4-4ubuntu1
1.4.5-1ubuntu1
1.4.6-1ubuntu2
1.4.6-1ubuntu3
1.4.6-1ubuntu3.1
1.4.6-1ubuntu3.2
1.4.6-1ubuntu3.3
1.4.6-1ubuntu3.4
1.4.6-1ubuntu3.5
1.4.6-1ubuntu3.6
1.4.6-1ubuntu3.7
1.4.6-1ubuntu3.8
1.4.6-1ubuntu3.9
1.4.6-1ubuntu3.9+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "nginx",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-naxsi",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        },
        {
            "binary_name": "nginx-naxsi-ui",
            "binary_version": "1.4.6-1ubuntu3.9+esm2"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2021-23017"
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}

Ubuntu:Pro:16.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.10.3-0ubuntu0.16.04.5+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.10.3-0ubuntu0.16.04.5+esm1

Affected versions

1.*

1.9.3-1ubuntu1
1.9.6-2ubuntu1
1.9.6-2ubuntu2
1.9.9-0ubuntu1
1.9.9-1ubuntu1
1.9.10-0ubuntu1
1.9.10-1ubuntu1
1.9.11-0ubuntu1
1.9.11-0ubuntu2
1.9.12-0ubuntu1
1.9.13-0ubuntu1
1.9.14-0ubuntu1
1.9.15-0ubuntu1
1.10.0-0ubuntu0.16.04.1
1.10.0-0ubuntu0.16.04.2
1.10.0-0ubuntu0.16.04.3
1.10.0-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.1
1.10.3-0ubuntu0.16.04.2
1.10.3-0ubuntu0.16.04.3
1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "nginx",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm1"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm1"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm1"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm1"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm1"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2021-23017"
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}