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mageiaGentoo FoundationMGASA-2020-0310
HistoryAug 01, 2020 - 2:25 a.m.

Updated dnsmasq packages fix security vulnerability

2020-08-0102:25:42
Gentoo Foundation
advisories.mageia.org
12

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

37.1%

Updated dnsmasq package fix insecure default configuration potentially making it an open resolver (CVE-2020-14312). In its default configuration, dnsmasq listen and answer query from any address even outside of the local subnet. Thus, it may inadvertently become an open resolver which might be used in Distributed Denial of Service attacks. This update add the option --local-service at startup which limits dnsmasq to listen only to machines on the same local network. This option only works if there aren’t any of the following options on cmdline or in dnsmasq.conf (without the double dash): --interface --except-interface --listen-address --auth-server

OSVersionArchitecturePackageVersionFilename
Mageia7noarchdnsmasq< 2.80-5.3dnsmasq-2.80-5.3.mga7

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

37.1%