DEBIAN-CVE-2021-3672

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Source
https://security-tracker.debian.org/tracker/CVE-2021-3672
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3672.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-3672
Upstream
Published
2021-11-23T19:15:07Z
Modified
2025-09-25T23:25:22.819941Z
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

Debian:11 / c-ares

Package

Name
c-ares
Purl
pkg:deb/debian/c-ares?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17.1-1+deb11u1

Affected versions

1.*

1.17.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / c-ares

Package

Name
c-ares
Purl
pkg:deb/debian/c-ares?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17.1-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / c-ares

Package

Name
c-ares
Purl
pkg:deb/debian/c-ares?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17.1-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / c-ares

Package

Name
c-ares
Purl
pkg:deb/debian/c-ares?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17.1-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}