CVE-2020-13849

CVSS V2 Medium 5 CVSS V3 High 7.5

Description

The MQTT protocol 3.1.1 requires a server to set a timeout value of 1.5 times the Keep-Alive value specified by a client, which allows remote attackers to cause a denial of service (loss of the ability to establish new connections), as demonstrated by SlowITe.

Overview

CVE ID
CVE-2020-13849

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2020-06-04T21:15:11

Last Modified Date
2020-06-10T18:18:39

Weakness Enumerations

CWE	URL
CWE-400	http://cwe.mitre.org/data/definitions/400.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:mqtt:mqtt:3.1.1:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://doi.org/10.3390/s20102932	Technical Description Third Party Advisory
https://www.mdpi.com/1424-8220/20/10/2932	Technical Description Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-13849
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13849

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:28:32				Added to TrackCVE
2022-12-04 17:27:40	2020-06-04T21:15Z	2020-06-04T21:15:11	CVE Published Date	updated
2022-12-04 17:27:40		2020-06-10T18:18:39	CVE Modified Date	updated
2022-12-04 17:27:40		Analyzed	Vulnerability Status	updated