Detections
Analytics

Echo: c-ares-1.13.0: security update to 1.13.0+e1c-ares-1.16.0: security update to 1.16.0+e1c-ares-1.7.4: security update to 1.7.4+e1

medium Tenable Self-Hosted Container Security Plugin ID 476249

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2021-3672)

Solution

Update the c-ares-1.13.0 library and its related packages to version 1.13.0+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2021-3672

Plugin Details

Severity: Medium

ID: 476249

Version: Revision 1.1

Type: Local

Published: 10/20/2026

Updated: 10/20/2026

Risk Information

VPR

Risk Factor: Low

Score: 2.8

Percentile: 22.22

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-3672

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/20/2026

Vulnerability Publication Date: 8/12/2021

Reference Information

CVE: CVE-2021-3672