CVE-2022-33682

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    CVE-2022-33682

    Published: 23 Sept 2022Last Modified: 12 Aug 2026

    Summary: Disabled Hostname Verification makes Brokers, Proxies vulnerable to MITM attack

    Details: 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 leaving intra-cluster connections and geo-replication connections vulnerable to man in the middle attacks, which could leak credentials, configuration data, message data, and any other data sent by these clients. The vulnerability is for both the pulsar+ssl protocol and HTTPS. 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 by providing the client with a cryptographically valid certificate for an unrelated host. This issue affects Apache Pulsar Broker, Proxy, and WebSocket 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.

    References: https://lists.apache.org/thread/l0ynfl161qghwfcgbbl8ld9hzbl9t3yx, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/33xxx/CVE-2022-33682.json, https://nvd.nist.gov/vuln/detail/CVE-2022-33682

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -8eae5b8d572861e49c40d456b1f3cbc5d414afe1

    Affected versions

    2.10.0-NA

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-33682 | CVE-DB