CVE-2021-41571: apache software foundation apache pulsar Incorrect Authorization

Vulnerability summary

CVE-2021-41571 is a medium (CVSS 6.5) Incorrect Authorization vulnerability in apache software foundation apache pulsar. EPSS estimates a 1.73% chance of exploitation in the next 30 days, higher than 77.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 01-02-2022
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

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.

• CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.