Apache Solr <= 8.8.1 SSRF Vulnerability CVE-2021-27905 Scanner
There is a server side request forgery (SSRF) vulnerability in Apache Solr.
Can be used by
Scan only one
Apache Solr <= 8.8.1 SSRF Vulnerability CVE-2021-27905 Scanner Detail
The ReplicationHandler (normally registered at "/replication" under a Solr core) in Apache Solr has a "masterUrl" (also "leaderUrl" alias) parameter that is used to designate another ReplicationHandler on another Solr core to replicate index data into the local core. To prevent a SSRF vulnerability, Solr ought to check these parameters against a similar configuration it uses for the "shards" parameter. Prior to this bug getting fixed, it did not. This problem affects essentially all Solr versions prior to it getting fixed in 8.8.2.