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Vulnerability · Published Feb 1, 2022 · Assigned by apache

CVE-2021-41571Pulsar Admin API allows access to data from other tenants using getMessageById API

Medium 6.5

In plain English

A medium-severity incorrect authorization in Apache Pulsar from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.7%top 22.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In Apache Pulsar it is possible to access data from BookKeeper that does not belong to the topics accessible by the authenticated user. The Admin API get-message-by-id requires the user to input a topic and a ledger id. The ledger id is a pointer to the data, and it is supposed to be a valid it for the topic. Authorisation controls are performed against the topic name and there is not proper validation the that ledger id is valid in the context of such ledger. So it may happen that the user is able to read from a ledger that contains data owned by another tenant. This issue affects Apache Pulsar Apache Pulsar version 2.8.0 and prior versions; Apache Pulsar version 2.7.3 and prior versions; Apache Pulsar version 2.6.4 and prior versions.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.apache.pulsar:pulsarno fix listedGHSA-3whx-qrj5-hh2h
Mavenorg.apache.pulsar:pulsar2.7.4GHSA-3whx-qrj5-hh2h
Mavenorg.apache.pulsar:pulsar2.8.1GHSA-3whx-qrj5-hh2h

Affected products (as reported)

VendorProductVersions
Apache Software Foundation Apache Pulsar Apache Pulsar – through 2.8.0

Weakness: CWE-863

References