CVE-2021-3672 Information

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 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Reference

https://c-ares.haxx.se/adv_20210810.html https://bugzilla.redhat.com/show_bug.cgi?id=1988342 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

5.6