Severity: moderate

Affected versions:

- Apache Solr 6.6.0 before 8.11.4
- Apache Solr 9.0.0 before 9.7.0

Description:

Insecure Default Initialization of Resource vulnerability in Apache Solr.

New ConfigSets that are created via a Restore command, which copy a configSet 
from the backup and give it a new name, are created without setting the 
"trusted" metadata.
ConfigSets that do not contain the flag are trusted implicitly if the metadata 
is missing, therefore this leads to "trusted" ConfigSets that may not have been 
created with an Authenticated request.
"trusted" ConfigSets are able to load custom code into classloaders, therefore 
the flag is supposed to only be set when the request that uploads the ConfigSet 
is Authenticated & Authorized.

This issue affects Apache Solr: from 6.6.0 before 8.11.4, from 9.0.0 before 
9.7.0. This issue does not affect Solr instances that are secured via 
Authentication/Authorization.

Users are primarily recommended to use Authentication and Authorization when 
running Solr. However, upgrading to version 9.7.0, or 8.11.4 will mitigate this 
issue otherwise.

This issue is being tracked as SOLR-17418 

Credit:

Liu Huajin (reporter)

References:

https://solr.apache.org/security.html#cve-2024-45217-apache-solr-configsets-created-during-a-backup-restore-command-are-trusted-implicitly
https://solr.apache.org
https://www.cve.org/CVERecord?id=CVE-2024-45217
https://issues.apache.org/jira/browse/SOLR-17418

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