CVE-2021-3672
- Source
- https://cve.org/CVERecord?id=CVE-2021-3672
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3672.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3672
- Aliases
- Downstream
ALPINE (1)
AZL (1)
BELL (1)
CLEANSTART (15)
- CLEANSTART-2025-VY76861
- CLEANSTART-2026-BD71263
- CLEANSTART-2026-EL60361
- CLEANSTART-2026-IS74202
- CLEANSTART-2026-JR35772
- CLEANSTART-2026-JY06700
- CLEANSTART-2026-KN34553
- CLEANSTART-2026-KZ45320
- CLEANSTART-2026-LJ44720
- CLEANSTART-2026-LN12820
- CLEANSTART-2026-QE42302
- CLEANSTART-2026-TX00223
- CLEANSTART-2026-WI75198
- CLEANSTART-2026-ZI00992
- CLEANSTART-2026-ZQ97710
DEBIAN (1)
ECHO (1)
MGASA (2)
OESA (1)
openSUSE (11)
RHSA (7)
SUSE (9)
UBUNTU (1)
- Related
- Published
- 2021-11-23T19:15:07Z
- Modified
- 2026-10-20T10:54:48Z
- 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.
- Database specific
{ "unresolved_ranges": [ { "cpes": [ "cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "last_affected": "1.17.0" } ], "source": "CPE_RANGE" } ], "vendor_product": "pgbouncer:pgbouncer" }, { "cpes": [ "cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "fixed": "1.0.1.1" } ], "source": "CPE_RANGE" } ], "vendor_product": "siemens:sinec_infrastructure_network_services" }, { "cpes": [ "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "33" }, { "last_affected": "33" }, { "introduced": "34" }, { "last_affected": "34" } ], "source": "CPE_STRING" } ], "vendor_product": "fedoraproject:fedora" }, { "cpes": [ "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:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "7.0" }, { "last_affected": "7.0" }, { "introduced": "7.7" }, { "last_affected": "7.7" }, { "introduced": "8.0" }, { "last_affected": "8.0" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_computer_node:1:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "1" }, { "last_affected": "1" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_computer_node" }, { "cpes": [ "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:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "7.7" }, { "last_affected": "7.7" }, { "introduced": "8.1" }, { "last_affected": "8.1" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_eus" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.0" }, { "last_affected": "8.0" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_for_ibm_z_systems" }, { "cpes": [ "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:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.1" }, { "last_affected": "8.1" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_for_ibm_z_systems_eus" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.0" }, { "last_affected": "8.0" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_for_power_little_endian" }, { "cpes": [ "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:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.1" }, { "last_affected": "8.1" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_for_power_little_endian_eus" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_server_aus" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*", "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_server_tus" }, { "cpes": [ "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:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.1" }, { "last_affected": "8.1" }, { "introduced": "8.2" }, { "last_affected": "8.2" }, { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_server_update_services_for_sap_solutions" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "8.4" }, { "last_affected": "8.4" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_tus" }, { "cpes": [ "cpe:2.3:o:redhat:enterprise_linux_workstation:1:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "1" }, { "last_affected": "1" } ], "source": "CPE_STRING" } ], "vendor_product": "redhat:enterprise_linux_workstation" } ] }- References
Affected packages
Git / github.com/c-ares/c-ares
Affected ranges
- Type
- GIT
- Repo
- https://github.com/c-ares/c-ares
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:c-ares_project:c-ares:*:*:*:*:*:*:*:*", "range": [ { "introduced": "1.0.0" }, { "fixed": "1.17.2" } ], "source": "CPE_RANGE" } ] }
Affected versions
Other
c-ares-1_17_0
c-ares-1_2_0
cares-1_10_0
cares-1_11_0
cares-1_11_0-rc1
cares-1_12_0
cares-1_13_0
cares-1_14_0
cares-1_15_0
cares-1_16_0
cares-1_16_1
cares-1_17_1
cares-1_1_0
cares-1_2_1
cares-1_3_1
cares-1_3_2
cares-1_4_0
cares-1_5_0
cares-1_5_1
cares-1_5_2
cares-1_5_3
cares-1_6_0
cares-1_7_0
cares-1_7_1
cares-1_7_2
cares-1_7_3
cares-1_7_4
cares-1_7_5
cares-1_8_0
cares-1_9_0
cares-1_9_1
curl-7_10_8
curl-7_11_0
curl-7_11_1
curl-7_12_0
curl-7_12_1
curl-7_12_2
curl-7_13_0
curl-7_13_1
curl-7_13_2
curl-7_14_0
curl-7_14_1
curl-7_15_0
curl-7_15_1
curl-7_15_3
curl-7_15_4
curl-7_15_5
curl-7_15_6-prepipeline
curl-7_16_0
curl-7_16_1
curl-7_16_2
curl-7_16_3
curl-7_16_4
curl-7_17_0
curl-7_17_1
curl-7_18_0
curl-7_18_1
curl-7_18_2
curl-7_19_0
curl-7_19_2
curl-7_19_3
curl-7_19_4
curl-7_19_5
curl-7_19_6
curl-7_19_7
curl-7_20_0
Git / github.com/nodejs/node
Affected ranges
- Type
- GIT
- Repo
- https://github.com/nodejs/node
- Events
-
IntroducedLast AffectedIntroducedFixedIntroducedLast AffectedIntroducedFixedIntroducedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*", "range": [ { "introduced": "12.0.0" }, { "last_affected": "12.12.0" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*", "range": [ { "introduced": "12.13.0" }, { "fixed": "12.22.5" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*", "range": [ { "introduced": "14.0.0" }, { "last_affected": "14.14.0" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*", "range": [ { "introduced": "14.15.0" }, { "fixed": "14.17.5" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*", "range": [ { "introduced": "16.0.0" }, { "fixed": "16.6.2" } ], "source": "CPE_RANGE" } ] }
Affected versions
v12.*
v12.0.0
v12.1.0
v12.10.0
v12.11.0
v12.11.1
v12.12.0
v12.13.0
v12.13.1
v12.14.0
v12.14.1
v12.15.0
v12.16.0
v12.16.1
v12.16.2
v12.16.3
v12.17.0
v12.18.0
v12.18.1
v12.18.2
v12.18.3
v12.18.4
v12.19.0
v12.19.1
v12.2.0
v12.20.0
v12.20.1
v12.20.2
v12.21.0
v12.22.0
v12.22.1
v12.22.2
v12.22.3
v12.22.4
v12.3.0
v12.3.1
v12.4.0
v12.5.0
v12.6.0
v12.7.0
v12.8.0
v12.8.1
v12.9.0
v12.9.1
v14.*
v14.0.0
v14.1.0
v14.10.0
v14.10.1
v14.11.0
v14.12.0
v14.13.0
v14.13.1
v14.14.0
v14.15.0
v14.15.1
v14.15.2
v14.15.3
v14.15.4
v14.15.5
v14.16.0
v14.16.1
v14.17.0
v14.17.1
v14.17.2
v14.17.3
v14.17.4
v14.2.0
v14.3.0
v14.4.0
v14.5.0
v14.6.0
v14.7.0
v14.8.0
v14.9.0
v16.*
v16.0.0
v16.1.0
v16.2.0
v16.3.0
v16.4.0
v16.4.1
v16.4.2
v16.5.0
v16.6.0
v16.6.1