Cross-site Scripting (XSS) Affecting c-ares package, versions <0:1.13.0-6.el8


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
2.81% (86th percentile)

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  • Snyk IDSNYK-ALMALINUX8-CARES-5639386
  • published28 May 2023
  • disclosed21 Sept 2021

Introduced: 21 Sep 2021

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

How to fix?

Upgrade AlmaLinux:8 c-ares to version 0:1.13.0-6.el8 or higher.
This issue was patched in ALSA-2022:2043.

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 AlmaLinux. See How to fix? for AlmaLinux:8 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 Base Scores

version 3.1