CVE-2020-14312 Detail
Current Description
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.
Analysis Description
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.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | Red Hat, Inc. |
Change History
1 change records found show changes
Initial Analysis 2/08/2021 5:25:55 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
OR
*cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:* versions up to (excluding) 31
|
|
| Added | CVSS V2 |
NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) |
|
| Added | CVSS V3.1 |
NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
|
| Changed | Reference Type |
https://bugzilla.redhat.com/show_bug.cgi?id=1851342 No Types Assigned |
https://bugzilla.redhat.com/show_bug.cgi?id=1851342 Issue Tracking, Third Party Advisory |
Quick Info
CVE Dictionary Entry:
CVE-2020-14312
NVD Published Date:
02/05/2021
NVD Last Modified:
02/08/2021
Source:
Red Hat, Inc.