Apache Solr's Kerberos plugin can be configured to use delegation tokens, which allows an application to reuse the authentication of an end-user or another application. There are two issues with this functionality (when using SecurityAwareZkACLProvider type of ACL provider e.g. SaslZkACLProvider). Firstly, access to the security configuration can be leaked to users other than the solr super user. Secondly, malicious users can exploit this leaked configuration for privilege escalation to further expose/modify private data and/or disrupt operations in the Solr cluster. The vulnerability is fixed from Apache Solr 6.6.1 onwards.

Affected Packages

Maven org.apache.solr:solr-core

Affected versions: 6.2.0 (fixed in 6.6.1)

Related CVEs

CVE-2017-9803

Key Information

GHSA ID

GHSA-f553-j2gv-g5r9

Published

May 14, 2022 1:23 AM

Last Modified

November 8, 2022 2:57 PM

CVSS Score

7.5 /10

Primary Ecosystem

Maven

Primary Package

org.apache.solr:solr-core

GitHub Reviewed

✓ Yes

Dataset

Last updated: July 28, 2025 6:37 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.