CVE-2022-33681

Published on: Not Yet Published

Last Modified on: 09/27/2022 03:41:00 PM UTC

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Certain versions of Pulsar from Apache contain the following vulnerability:

Delayed TLS hostname verification in the Pulsar Java Client and the Pulsar Proxy make each client vulnerable to a man in the middle attack. Connections from the Pulsar Java Client to the Pulsar Broker/Proxy and connections from the Pulsar Proxy to the Pulsar Broker are vulnerable. Authentication data is sent before verifying the server’s TLS certificate matches the hostname, which means authentication data could be exposed to an attacker. 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. Because the client sends authentication data before performing hostname verification, an attacker could gain access to the client’s authentication data. The client eventually closes the connection when it verifies the hostname and identifies the targeted hostname does not match a hostname on the certificate. Because the client eventually closes the connection, the value of the intercepted authentication data depends on the authentication method used by the client. Token based authentication and username/password authentication methods are vulnerable because the authentication data can be used to impersonate the client in a separate session. This issue affects Apache Pulsar Java Client 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.

  • CVE-2022-33681 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache Pulsar version <= 2.7.4
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache Pulsar version <= 2.8.3
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache Pulsar version <= 2.9.2
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache Pulsar version = 2.10.0
  • Affected Vendor/Software: URL Logo Apache Software Foundation - Apache Pulsar version <= 2.6.4
Vulnerability Patch/Work Around
  • Any users running affected versions of the Java Client should rotate vulnerable authentication data, including tokens and passwords. 2.7 Pulsar Java Client users should upgrade to 2.7.5, and rotate vulnerable authentication data, including tokens and passwords. 2.8 Pulsar Java Client users should upgrade to 2.8.4, and rotate vulnerable authentication data, including tokens and passwords. 2.9 Pulsar Java Client users should upgrade to 2.9.3, and rotate vulnerable authentication data, including tokens and passwords. 2.10 Pulsar Java Client users should upgrade to 2.10.1, and rotate vulnerable authentication data, including tokens and passwords. Any users running the Pulsar Java Client for 2.6.4 and earlier should upgrade to one of the above patched versions, and rotate vulnerable authentication data, including tokens and passwords.

CVSS3 Score: 5.9 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK HIGH NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH NONE NONE

CVE References

Description Tags Link
No Description Provided lists.apache.org
text/html
URL Logo MISC lists.apache.org/thread/fpo6x10trvn20hlk0dmnr5vlz5v4kl3d

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationApachePulsarAllAllAllAll
ApplicationApachePulsarAllAllAllAll
ApplicationApachePulsar2.10.0-AllAll
ApplicationApachePulsar2.10.0-AllAll
  • cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:apache:pulsar:*:*:*:*:*:java:*:*:
  • cpe:2.3:a:apache:pulsar:2.10.0:-:*:*:*:*:*:*:
  • cpe:2.3:a:apache:pulsar:2.10.0:-:*:*:*:java:*:*:

Discovery Credit

This issue was discovered by Michael Marshall of DataStax.

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2022-33681 : Delayed TLS hostname verification in the Pulsar Java Client and the Pulsar Proxy make each client… twitter.com/i/web/status/1… 2022-09-23 09:26:59
Reddit Logo Icon /r/netcve CVE-2022-33681 2022-09-23 10:38:13
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