Cross-site Scripting (XSS) Affecting c-ares package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.27% (68th percentile)

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  • Snyk IDSNYK-CENTOS7-CARES-2025697
  • published11 Aug 2021
  • disclosed10 Aug 2021

Introduced: 10 Aug 2021

CVE-2021-3672  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

There is no fixed version for Centos:7 c-ares.

NVD Description

Note: Versions mentioned in the description apply only to the upstream c-ares package and not the c-ares package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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 Scores

version 3.1