#VU78253 Origin validation error in paho.mqtt.java - CVE-2019-11777

Vulnerability identifier: #VU78253

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-11777

CWE-ID: CWE-346

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
paho.mqtt.java
Other software / Other software solutions

Vendor: Eclipse

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to when connecting to an MQTT server using TLS and setting a host name verifier, the result of that verification is not checked. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

paho.mqtt.java: 1.2.0

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External links
https://bugs.eclipse.org/bugs/show_bug.cgi?id=549934

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.