Ability to modify privileges from Custom to Read-Write

Summary

An improper privilege management vulnerability [CWE-269] in FortiOS & FortiProxy may allow an administrator that has access to the admin profile section (System subsection Administrator Users) to modify their own profile and upgrade their privileges to Read Write via CLI or GUI commands.

Affected Products

FortiOS version 7.2.0
FortiOS version 7.0.0 through 7.0.7
FortiOS 6.4 all versions
FortiOS 6.2 all versions
FortiOS 6.0 all versions

FortiProxy version 7.2.0 through 7.2.1
FortiProxy version 7.0.0 through 7.0.7
FortiProxy 2.0 all versions
FortiProxy 1.2 all versions
FortiProxy 1.1 all versions

Solutions

Please upgrade to FortiOS version 7.2.1 or above
Please upgrade to FortiOS version 7.0.8 or above
Please upgrade to FortiProxy version 7.2.2 or above
Please upgrade to FortiProxy version 7.0.8 or above

Workaround :

Avoid administrative profiles that mix "custom privileges" permissions on a section and "read-write" permissions on the system section.

Acknowledgement

Fortinet is pleased to thank the customer who reported this vulnerability under responsible disclosure.