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GHSA-5phw-3jrp-3vj8

Server-Side Request Forgery in Apache Solr

Source: GitHub Advisory Database (reviewed) High CVE-2021-27905

Packages

EcosystemPackageAffectedFixed in
Maven org.apache.solr:solr-parent < 8.8.2 8.8.2

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.