Headline
GHSA-68r2-fwcg-qpm8: Apache Solr vulnerable to Execution with Unnecessary Privileges
Core creation allows users to replace “trusted” configset files with arbitrary configuration
Solr instances that (1) use the “FileSystemConfigSetService” component (the default in “standalone” or “user-managed” mode), and (2) are running without authentication and authorization are vulnerable to a sort of privilege escalation wherein individual “trusted” configset files can be ignored in favor of potentially-untrusted replacements available elsewhere on the filesystem. These replacement config files are treated as “trusted” and can use “<lib>” tags to add to Solr’s classpath, which an attacker might use to load malicious code as a searchComponent or other plugin.
This issue affects all Apache Solr versions up through Solr 9.7. Users can protect against the vulnerability by enabling authentication and authorization on their Solr clusters or switching to SolrCloud (and away from “FileSystemConfigSetService”). Users are also recommended to upgrade to Solr 9.8.0, which mitigates this issue by disabling use of “<lib>” tags by default.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-24814
Apache Solr vulnerable to Execution with Unnecessary Privileges
High severity GitHub Reviewed Published Jan 27, 2025 to the GitHub Advisory Database • Updated Jan 27, 2025
Package
maven org.apache.solr:solr-core (Maven)
Affected versions
< 9.8.0
Core creation allows users to replace “trusted” configset files with arbitrary configuration
Solr instances that (1) use the “FileSystemConfigSetService” component (the default in “standalone” or “user-managed” mode), and (2) are running without authentication and authorization are vulnerable to a sort of privilege escalation wherein individual “trusted” configset files can be ignored in favor of potentially-untrusted replacements available elsewhere on the filesystem. These replacement config files are treated as “trusted” and can use “” tags to add to Solr’s classpath, which an attacker might use to load malicious code as a searchComponent or other plugin.
This issue affects all Apache Solr versions up through Solr 9.7. Users can protect against the vulnerability by enabling authentication and authorization on their Solr clusters or switching to SolrCloud (and away from “FileSystemConfigSetService”). Users are also recommended to upgrade to Solr 9.8.0, which mitigates this issue by disabling use of “” tags by default.
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-24814
- https://lists.apache.org/thread/gl291pn8x9f9n52ys5l0pc0b6qtf0qw1
- http://www.openwall.com/lists/oss-security/2025/01/26/1
- apache/solr@f492e24
- https://issues.apache.org/jira/browse/SOLR-16781
Published to the GitHub Advisory Database
Jan 27, 2025
Last updated
Jan 27, 2025