CVE-2021-3672
At a glance Severity Not available EPSS EPSS 2.81 % · percentile 86 (2026-10-27) State PUBLISHED Published 2021-11-23 Updated 2024-10-15 Assigner redhat NVD status Modified 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.
Scores Version Score Vector Scored by CVSS 3.1 MEDIUM 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L NVD · nvd@nist.gov (Primary) CVSS 2.0 MEDIUM 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P NVD · nvd@nist.gov (Primary)
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE) cpe:2.3:a:c-ares_project:c-ares:*:*:*:*:*:*:*:* ≥ 1.0.0 < 1.17.2cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.7:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_computer_node:1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:1:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* < 1.0.1.1cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* ≥ 12.0.0 ≤ 12.12.0cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* ≥ 12.13.0 < 12.22.5cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* ≥ 14.0.0 ≤ 14.14.0cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* ≥ 14.15.0 < 14.17.5cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* ≥ 16.0.0 < 16.6.2cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:* ≤ 1.17.0Affected products Product Versions c-ares affected c-ares 1.17.2
References
Sources
