#VU67594 Improper validation of certificate with host mismatch


Published: 2022-09-22

Vulnerability identifier: #VU67594

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-33682

CWE-ID: CWE-297

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 TLS hostname verification cannot be enabled in the Pulsar Broker's Java Client, the Pulsar Broker's Java Admin Client, the Pulsar WebSocket Proxy's Java Client, and the Pulsar Proxy's Admin Client. 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/q3/227


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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