#VU67595 Improper Certificate Validation


Published: 2022-09-22

Vulnerability identifier: #VU67595

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-33683

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Pulsar
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to Pulsar Brokers and Proxies create an internal Pulsar Admin Client that does not verify peer TLS certificates, even when tlsAllowInsecureConnection is disabled via configuration. A remote attacker can perform MitM attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Pulsar: 2.8.0 - 2.8.3, 2.9.0 - 2.9.2, 2.7.0 - 2.7.4, 2.1.0 - 2.1.1, 2.0.0 - 2.0.1, 2.6.0 - 2.6.4, 2.5.0 - 2.5.2, 2.4.0 - 2.4.2, 2.3.0 - 2.3.2, 2.2.0 - 2.2.1


CPE

External links
http://seclists.org/oss-sec/2022/q3/228


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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