PT-2021-5832 · C-Ares+10 · C-Ares+10
Published
2021-08-10
·
Updated
2026-05-18
·
CVE-2021-3672
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
c-ares library (affected versions not specified)
Description
The issue is related to a flaw in the c-ares library, where a missing input validation check of host names returned by DNS can lead to output of wrong hostnames, potentially resulting in Domain Hijacking. This poses a threat to confidentiality, integrity, and system availability, allowing a remote attacker to access confidential data, compromise its integrity, and cause a denial of service.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu
C-Ares