CVE-2021-3672

medium

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.

References

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

https://www.oracle.com/security-alerts/cpujul2022.html

Details

Source: MITRE

Published: 2021-11-23

Updated: 2022-07-25

Type: CWE-79

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.6

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

Impact Score: 3.4

Exploitability Score: 2.2

Severity: MEDIUM