An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The wguest account could execute commands by injecting into PostgreSQL trigger functions. This allowed privilege escalation from the wguest user to the postgres user.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
| Link | Tags |
|---|---|
| https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961 | vendor advisory |
| https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1 | third party advisory exploit |
| https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2 | third party advisory exploit |