CVEvulnerability

CVE-2021-3672

5.6 MEDIUM Published 2021-11-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-11-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.6 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-79

Description

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.

Affected configurations

• c-ares project c-ares (>= 1.0.0 < 1.17.2) • fedoraproject fedora 33 • fedoraproject fedora 34 • redhat enterprise linux 7.0 • redhat enterprise linux 7.7 • redhat enterprise linux 8.0 • redhat enterprise linux computer node 1 • redhat enterprise linux eus 7.7 • redhat enterprise linux eus 8.1 • redhat enterprise linux eus 8.2 • redhat enterprise linux eus 8.4 • redhat enterprise linux for ibm z systems 8.0 • redhat enterprise linux for ibm z systems eus 8.1 • redhat enterprise linux for ibm z systems eus 8.2 • redhat enterprise linux for ibm z systems eus 8.4 • redhat enterprise linux for power little endian 8.0 • redhat enterprise linux for power little endian eus 8.1 • redhat enterprise linux for power little endian eus 8.2 • redhat enterprise linux for power little endian eus 8.4 • redhat enterprise linux server aus 8.2 • redhat enterprise linux server aus 8.4 • redhat enterprise linux server tus 8.2 • redhat enterprise linux server tus 8.4 • redhat enterprise linux server update services for sap solutions 8.1 • redhat enterprise linux server update services for sap solutions 8.2 • redhat enterprise linux server update services for sap solutions 8.4 • redhat enterprise linux tus 8.4 • redhat enterprise linux workstation 1 • siemens sinec infrastructure network services (< 1.0.1.1) • nodejs node.js (>= 12.0.0 <= 12.12.0) • nodejs node.js (>= 12.13.0 < 12.22.5) • nodejs node.js (>= 14.0.0 <= 14.14.0) • nodejs node.js (>= 14.15.0 < 14.17.5) • nodejs node.js (>= 16.0.0 < 16.6.2) • pgbouncer pgbouncer (<= 1.17.0)

Related

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References