CVE-2019-11777

org.eclipse.paho.client.mqttv3: Improper hostname validation in the MQTT library

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Eclipse Paho Java client library version 1.2.0, when connecting to an MQTT server using TLS and setting a host name verifier, the result of that verification is not checked. This could allow one MQTT server to impersonate another and provide the client library with incorrect information.

En la biblioteca del cliente Eclipse Paho Java versión 1.2.0, cuando se conecta con un servidor MQTT usando TLS y configura un verificador de nombre de host, el resultado de esta verificación no es comprobada. Esto podría permitir a un servidor MQTT hacerse pasar por otro y proveer a la biblioteca del cliente con información incorrecta.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-05-06 CVE Reserved
2019-09-11 CVE Published
2023-07-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-345: Insufficient Verification of Data Authenticity
CWE-346: Origin Validation Error
CWE-755: Improper Handling of Exceptional Conditions

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugs.eclipse.org/bugs/show_bug.cgi?id=549934	2020-10-06
https://access.redhat.com/security/cve/CVE-2019-11777	2020-12-16
https://bugzilla.redhat.com/show_bug.cgi?id=1879743	2020-12-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Eclipse Search vendor "Eclipse"		Paho Java Client Search vendor "Eclipse" for product "Paho Java Client"				1.2.0 Search vendor "Eclipse" for product "Paho Java Client" and version "1.2.0"		-		Affected