borgmatic: Shell Injection

Background

borgmatic is simple, configuration-driven backup software for servers and workstations.

Description

Prevent shell injection attacks within the PostgreSQL hook, the MongoDB hook, the SQLite hook, the “borgmatic borg” action, and command hook variable/constant interpolation.

Impact

Shell injection may be used in several borgmatic backends to execute arbitrary code.

Workaround

There is no known workaround at this time.

Resolution

All borgmatic users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-backup/borgmatic-1.8.8"