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Security Advisories: GSA_kwCzR0hTQS01cjNoLWMzcjctOXc0aM4AAvtk
Apache Pulsar Disabled Certificate Validation for OAuth Client Credential Requests makes C++/Python Clients vulnerable to MITM attack
The Apache Pulsar C++ Client does not verify peer TLS certificates when making HTTPS calls for the OAuth2.0 Client Credential Flow, even when tlsAllowInsecureConnection
is disabled via configuration. This vulnerability allows an attacker to perform a man in the middle attack and intercept and/or modify the GET request that is sent to the ClientCredentialFlow
"issuer url". The intercepted credentials can be used to acquire authentication data from the OAuth2.0 server to then authenticate with an Apache Pulsar cluster. 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. The Apache Pulsar Python Client wraps the C++ client, so it is also vulnerable in the same way.
This issue affects Apache Pulsar C++ Client and Python 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 to 2.10.1; 2.6.4 and earlier.
Any users running affected versions of the C++ Client or the Python Client should rotate vulnerable OAuth2.0 credentials, including client_id
and client_secret
.
- 2.7 C++ and Python Client users should upgrade to 2.7.5 and rotate vulnerable OAuth2.0 credentials.
- 2.8 C++ and Python Client users should upgrade to 2.8.4 and rotate vulnerable OAuth2.0 credentials.
- 2.9 C++ and Python Client users should upgrade to 2.9.3 and rotate vulnerable OAuth2.0 credentials.
- 2.10 C++ and Python Client users should upgrade to 2.10.2 and rotate vulnerable OAuth2.0 credentials. 3.0 C++ users are unaffected and 3.0 Python Client users will be unaffected when it is released.
- Any users running the C++ and Python Client for 2.6 or less should upgrade to one of the above patched versions.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01cjNoLWMzcjctOXc0aM4AAvtk
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: almost 2 years ago
CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Percentage: 0.00071
EPSS Percentile: 0.32506
Identifiers: GHSA-5r3h-c3r7-9w4h, CVE-2022-33684
References:
- https://nvd.nist.gov/vuln/detail/CVE-2022-33684
- https://lists.apache.org/thread/ky1ssskvkj00y36k7nys9b5gm5jjrzwv
- https://github.com/apache/pulsar/pull/16064
- https://huntr.dev/bounties/df89b724-3201-47aa-b8cd-282e112a566f
- https://github.com/advisories/GHSA-5r3h-c3r7-9w4h
Blast Radius: 27.1
Affected Packages
pypi:pulsar-client
Dependent packages: 44Dependent repositories: 2,230
Downloads: 818,535 last month
Affected Version Ranges: >= 2.10.0, < 2.10.2, >= 2.9.0, < 2.9.3, >= 2.8.0, < 2.8.4, < 2.7.5
Fixed in: 2.10.2, 2.9.3, 2.8.4, 2.7.5
All affected versions: 1.19.0, 1.20.0, 1.21.0, 1.22.0, 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.3.0, 2.3.1, 2.3.2, 2.4.0, 2.4.1, 2.4.2, 2.5.0, 2.5.1, 2.5.2, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.8.0, 2.8.1, 2.8.2, 2.8.3, 2.9.1, 2.9.2, 2.10.0, 2.10.1
All unaffected versions: 2.7.5, 2.8.4, 2.9.3, 2.9.4, 2.10.2, 3.0.0, 3.1.0, 3.2.0, 3.3.0, 3.4.0, 3.5.0