Detections
Analytics

Apache ZooKeeper 3.7.x < 3.7.2, 3.8.x < 3.8.3, 3.9.x < 3.9.1 Authorization Bypass

critical Nessus Plugin ID 183520

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Synopsis

The remote Apache ZooKeeper server is affected by an authorization bypass vulnerability.

Description

The version of Apache ZooKeeper listening on the remote host is prior to 3.7.2, 3.8.x prior to 3.8.3 or 3.9.x prior to 3.9.1. It is, therefore, affected by the following:

 - Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeper. If SASL Quorum Peer authentication is enabled in ZooKeeper (quorum.auth.enableSasl=true), the authorization is done by verifying that the instance part in SASL authentication ID is listed in zoo.cfg server list. The instance part in SASL auth ID is optional and if it's missing, like '[email protected]', the authorization check will be skipped. As a result an arbitrary endpoint could join the cluster and begin propagating counterfeit changes to the leader, essentially giving it complete read-write access to the data tree. Quorum Peer authentication is not enabled by default. (CVE-2023-44981) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update to Apache ZooKeeper 3.7.2, 3.8.3, 3.9.1 or later.

See Also

https://zookeeper.apache.org/security.html

Plugin Details

Severity: Critical

ID: 183520

File Name: apache_zookeeper_3_9_1.nasl

Version: 1.1

Type: combined

Family: Misc.

Published: 10/20/2023

Updated: 10/23/2023

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2023-44981

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:zookeeper

Required KB Items: Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 10/11/2023

Vulnerability Publication Date: 10/11/2023

Reference Information

CVE: CVE-2023-44981