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[email protected]CVE-2020-14312

HistoryFeb 06, 2021 - 12:15 a.m.

CVE-2020-14312

2021-02-0600:15:12

CWE-284

[email protected]

web.nvd.nist.gov

104

cve-2020-14312

dnsmasq

ddos

open resolver

security flaw

red hat enterprise linux

fedora

nvd

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

5.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

37.0%

JSON

A flaw was found in the default configuration of dnsmasq, as shipped with Fedora versions prior to 31 and in all versions Red Hat Enterprise Linux, where it listens on any interface and accepts queries from addresses outside of its local subnet. In particular, the option local-service is not enabled. Running dnsmasq in this manner may inadvertently make it an open resolver accessible from any address on the internet. This flaw allows an attacker to conduct a Distributed Denial of Service (DDoS) against other systems.

Affected configurations

Vulners

NVD

Node

dnsmasqdnsmasq

VendorProductVersionCPE
dnsmasqdnsmasq*cpe:2.3:a:dnsmasq:dnsmasq:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
dnsmasq	dnsmasq	*	cpe:2.3:a:dnsmasq:dnsmasq::::::::

CNA Affected

[
  {
    "product": "dnsmasq",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fedora version prior to 31"
      },
      {
        "status": "affected",
        "version": "all RHEL versions"
      }
    ]
  }
]