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GLSA-202012-11 : c-ares: Denial of service

high Nessus Plugin ID 144603

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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-202012-11 (c-ares: Denial of service)

 It was discovered that c-ares incorrectly handled certain DNS requests.
 Impact :

 A remote attacker, able to trigger a DNS request for a host of their choice by an application linked against c-ares, could possibly cause a Denial of Service condition.
 Workaround :

 There is no known workaround at this time.

Solution

All c-ares users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=net-dns/c-ares-1.17.1'

See Also

https://security.gentoo.org/glsa/202012-11

Plugin Details

Severity: High

ID: 144603

File Name: gentoo_GLSA-202012-11.nasl

Version: 1.5

Type: local

Published: 12/24/2020

Updated: 1/31/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-8277

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:c-ares, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 12/23/2020

Vulnerability Publication Date: 11/19/2020

Reference Information

CVE: CVE-2020-8277

GLSA: 202012-11