V-251252

Discussion

Previous versions of DBMS components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some DBMSs' installation tools may remove older versions of software automatically from the information system. In other cases, manual review and removal will be required. In planning installations and upgrades, organizations must include steps (automated, manual, or both) to identify and remove the outdated modules. A transition period may be necessary when both the old and the new software are required. This should be considered in the planning.

Check Content

When the Redis software is upgraded to a new version, the old version install file remains on the server. The users must remove this manually. To verify if the old install files have been deleted, check the locations below:
/opt/redislabs - Main Installation directory for all Redis Enterprise Software binaries
/opt/redislabs/config - System configuration files
/opt/redislabs/lib - System library files
/var/opt/redislabs - Default storage location for the cluster data, system logs, backups and ephemeral, persisted data
/tmp - Temporary files

The GREP command can be used to search for old Redis files in the above locations. 

If software components that have been replaced or made unnecessary are not removed, this is a finding.