CVE-2023-50298: Apache Solr: Solr can expose ZooKeeper credentials via Streaming Expressions

                							

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CVE-2023-50298: Apache Solr: Solr can expose ZooKeeper credentials via Streaming Expressions

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From: Houston Putman &lt;houston () apache org&gt;

Date: Fri, 09 Feb 2024 17:19:48 +0000

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Severity: low

Affected versions:

- Apache Solr 6.0.0 through 8.11.2
- Apache Solr 9.0.0 before 9.4.1

Description:

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Solr.This issue affects Apache Solr: 
from 6.0.0 through 8.11.2, from 9.0.0 before 9.4.1.

Solr Streaming Expressions allows users to extract data from other Solr Clouds, using a "zkHost" parameter.
When original SolrCloud is setup to use ZooKeeper credentials and ACLs, they will be sent to whatever "zkHost" the user 
provides.
An attacker could setup a server to mock ZooKeeper, that accepts ZooKeeper requests with credentials and ACLs and 
extracts the sensitive information,
then send a streaming expression using the mock server's address in "zkHost".
Streaming Expressions are exposed via the "/streaming" handler, with "read" permissions.

Users are recommended to upgrade to version 8.11.3 or 9.4.1, which fix the issue.
From these versions on, only zkHost values that have the same server address (regardless of chroot), will use the 
given ZooKeeper credentials and ACLs when connecting.

This issue is being tracked as SOLR-17098 

Credit:

Qing Xu (reporter)

References:

https://solr.staged.apache.org/security.html#cve-2023-50298-apache-solr-can-expose-zookeeper-credentials-via-streaming-expressions
https://solr.apache.org
https://www.cve.org/CVERecord?id=CVE-2023-50298
https://issues.apache.org/jira/browse/SOLR-17098

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CVE-2023-50298: Apache Solr: Solr can expose ZooKeeper credentials via Streaming Expressions Houston Putman (Feb 09)

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