Title: CVE-2017-3163: Apache Solr ReplicationHandler path traversal attack** category: solr/security cve: CVE-2017-3163

CVE-2017-3163: Apache Solr ReplicationHandler path traversal attack

Severity: Moderate

Vendor:
The Apache Software Foundation

Versions Affected:
Solr 1.4 to 6.4.0

Description:
When using the Index Replication feature, Solr nodes can pull index files from a master/leader node using an HTTP API which accepts a file name. However, Solr did not validate the file name, hence it was possible to craft a special request involving path traversal, leaving any file readable to the Solr server process exposed. Solr servers protected and restricted by firewall rules and/or authentication would not be at risk since only trusted clients and users would gain direct HTTP access.

Mitigation:

• 6.x users should upgrade to 6.4.1
• 5.x users should upgrade to 5.5.4
• 4.x, 3.x and 1.4 users should upgrade to a supported version of Solr or setup proper firewalling, or disable the ReplicationHandler if not in use.

Credit:
This issue was discovered by Hrishikesh Gadre of Cloudera Inc.

References:

• https://issues.apache.org/jira/browse/SOLR-10031
• https://wiki.apache.org/solr/SolrSecurity