CVE-2021-3672

Advisory lineage Upstream: 0 Downstream: 36
Modified
Published: 23 Nov 2021, 00:00
Last modified:15 Oct 2024, 17:14

Vulnerability Summary

Overall Risk (default)
medium
37/100
CVSS Score
6.8 MEDIUM
v2.0 (nvd)
EPSS Score
0.04% LOW
0% probability -0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

23 Nov 2021, 00:00
Published
Vulnerability first disclosed
15 Oct 2024, 17:14
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.6CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  • v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.04%• Percentile: 14%

Techniques & Countermeasures

  • CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

    The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Affected Systems

  • c-ares_project•c-ares

    ≥ 1.0.0, < 1.17.2

  • fedoraproject•fedora

    33 | 34

  • nodejs•node.js

    ≥ 12.0.0, ≤ 12.12.0 | ≥ 12.13.0, < 12.22.5 | ≥ 14.0.0, ≤ 14.14.0 | ≥ 14.15.0, < 14.17.5 | ≥ 16.0.0, < 16.6.2

  • pgbouncer•pgbouncer

    ≤ 1.17.0

  • redhat•enterprise_linux

    7.0 | 7.7 | 8.0

  • redhat•enterprise_linux_computer_node

    1

  • redhat•enterprise_linux_eus

    7.7 | 8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_for_ibm_z_systems

    8.0

  • redhat•enterprise_linux_for_ibm_z_systems_eus

    8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_for_power_little_endian

    8.0

  • redhat•enterprise_linux_for_power_little_endian_eus

    8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_server_aus

    8.2 | 8.4

  • redhat•enterprise_linux_server_tus

    8.2 | 8.4

  • redhat•enterprise_linux_server_update_services_for_sap_solutions

    8.1 | 8.2 | 8.4

  • redhat•enterprise_linux_tus

    8.4

  • redhat•enterprise_linux_workstation

    1

  • siemens•sinec_infrastructure_network_services

    < 1.0.1.1

References (5)