CVE Vulnerability

CVE-2021-41571

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.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/apache/pulsar/issues/11814 Exploit Issue Tracking
https://lists.apache.org/thread/8n3k7pvyh4cf9q2jfzb6pb32ync6xlvr Mailing List Vendor Advisory
https://pulsar.apache.org/admin-rest-api/#operation/getLastMessageId Patch Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:pulsar:2.8.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
Information

Published : 2022-02-01 01:15

Updated : 2022-02-09 03:47

NVD link : CVE-2021-41571

Mitre link : CVE-2021-41571

Products Affected
No products.
CWE
CWE-20