When using the Index Replication feature, Apache Solr nodes can pull index files from a master/leader node using an HTTP API which accepts a file name. However, Solr before 5.5.4 and 6.x before 6.4.1 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.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
| Link | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:1448 | vendor advisory |
| https://access.redhat.com/errata/RHSA-2018:1449 | vendor advisory |
| https://access.redhat.com/errata/RHSA-2018:1450 | vendor advisory |
| https://access.redhat.com/errata/RHSA-2018:1451 | vendor advisory |
| https://lists.apache.org/thread.html/a6a33a186f293f9f9aecf3bd39c76252bfc49a79de4321dd2a53b488%40%3Csolr-user.lucene.apache.org%3E | mailing list |
| https://access.redhat.com/errata/RHSA-2018:1447 | vendor advisory |
| https://www.debian.org/security/2018/dsa-4124 | vendor advisory |