Vulnerability in Apache Pulsar
CVE-2022-33683
Apache Pulsar Brokers and Proxies create an internal Pulsar Admin Client that does not verify peer TLS certificates, even when tlsAllowInsecureConnection is disabled via configuration. The Pulsar Admin Client's intra-cluster and geo-replication HTTPS connections are vulnerable to man in the middle attacks, which could leak authentication data, configuration data, and any other data sent by these clients. An attacker can only take advantage of this vulnerability by taking control of a machine 'between' the client and the server. The attacker must then actively manipulate traffic to perform the attack. This issue affects Apache Pulsar Broker and Proxy versions 2.7.0 to 2.7.4; 2.8.0 to 2.8.3; 2.9.0 to 2.9.2; 2.10.0; 2.6.4 and earlier.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Apache Pulsar — versions 2.10.0
- Apache Software Foundation Pulsar — versions 2.10.0, 2.7, 2.8
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread/42v5rsxj36r3nhfxhmhb2x12r5jmvx3x (Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-33683?
- CVE-2022-33683 is a medium-severity vulnerability in Apache Pulsar, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2022-09-23.
- How severe is CVE-2022-33683?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2022-33683 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.