UBUNTU-CVE-2021-3672

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Source
https://ubuntu.com/security/CVE-2021-3672
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3672.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3672
Related
Published
2021-08-10T06:00:00Z
Modified
2021-08-10T06:00:00Z
Severity
  • 5.6 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
[none]
Details

A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.

References

Affected packages

Ubuntu:Pro:16.04:LTS / c-ares

Package

Name
c-ares
Purl
pkg:deb/ubuntu/c-ares?arch=src?distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.10.0-3ubuntu0.2+esm1

Affected versions

1.*

1.10.0-2
1.10.0-3
1.10.0-3ubuntu0.1
1.10.0-3ubuntu0.2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.10.0-3ubuntu0.2+esm1",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.10.0-3ubuntu0.2+esm1",
            "binary_name": "libc-ares2"
        },
        {
            "binary_version": "1.10.0-3ubuntu0.2+esm1",
            "binary_name": "libc-ares2-dbgsym"
        }
    ]
}

Ubuntu:18.04:LTS / c-ares

Package

Name
c-ares
Purl
pkg:deb/ubuntu/c-ares?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.14.0-1ubuntu0.1

Affected versions

1.*

1.13.0-2
1.13.0-3
1.14.0-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.14.0-1ubuntu0.1",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.14.0-1ubuntu0.1",
            "binary_name": "libc-ares2"
        },
        {
            "binary_version": "1.14.0-1ubuntu0.1",
            "binary_name": "libc-ares2-dbgsym"
        }
    ]
}

Ubuntu:20.04:LTS / c-ares

Package

Name
c-ares
Purl
pkg:deb/ubuntu/c-ares?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.15.0-1ubuntu0.1

Affected versions

1.*

1.15.0-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.15.0-1ubuntu0.1",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.15.0-1ubuntu0.1",
            "binary_name": "libc-ares2"
        },
        {
            "binary_version": "1.15.0-1ubuntu0.1",
            "binary_name": "libc-ares2-dbgsym"
        }
    ]
}

Ubuntu:22.04:LTS / c-ares

Package

Name
c-ares
Purl
pkg:deb/ubuntu/c-ares?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17.1-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.17.1-1ubuntu1",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.17.1-1ubuntu1",
            "binary_name": "libc-ares2"
        },
        {
            "binary_version": "1.17.1-1ubuntu1",
            "binary_name": "libc-ares2-dbgsym"
        }
    ]
}