Apache Solr DataImportHandler Code Injection Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 10/12/2021. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| org.apache.solr:solr-core | < 8.2.0 | 8.2.0 |
| solr | ≥ 8.1.0, < 8.1.2< 7.7.3 | 8.1.27.7.3 |
In Apache Solr, the DataImportHandler, an optional but popular module to pull in data from databases and other sources, has a feature in which the whole DIH configuration can come from a request's "dataConfig" parameter. The debug mode of the DIH admin screen uses this to allow convenient debugging / development of a DIH config. Since a DIH config can contain scripts, this parameter is a security risk. Starting with version 8.2.0 of Solr, use of this parameter requires setting the Java System property "enable.dih.dataConfigParam" to true.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free