Buffer overflow in execute backup-local command

Summary

A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb may allow a privileged attacker to execute arbitrary code or commands via specifically crafted CLI execute backup-local rename and execute backup-local show operations.

Affected Products

FortiWeb version 7.0.0 through 7.0.1
FortiWeb version 6.3.6 through 6.3.19
FortiWeb 6.4 all versions

Solutions

Please upgrade to FortiWeb version 7.0.2 or above
Please upgrade to FortiWeb version 6.3.20 or above

Acknowledgement

Internally discovered and reported by Giulia Clerici of the Fortinet Product Security team.

Timeline

2023-02-16: Initial publication