PSIRT Advisories

FortiMail - Multiple buffer overflows


Multiple instances of incorrect calculation of buffer size in FortiMail Webmail and Administrative interface may allow an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.  

Affected Products

FortiMail 6.4.4 and below.
FortiMail 6.2.6 and below.
FortiMail 6.0.10 and below.
FortiMail 5.4.12 and below.


Upgrade to FortiMail 6.4.5 or above.
Upgrade to FortiMail 6.2.7 or above.
Upgrade to FortiMail 6.0.11 or above.
5.4 Fix to be confirmed.


Internally discovered and reported by Giuseppe Cocomazzi of the Fortinet PSIRT Team.