FortiOS - Integer overflow in SSLVPN allocator


An integer overflow or wraparound vulnerability [CWE-190] in FortiOS SSLVPN memory allocator may allow an unauthenticated attacker to corrupt control data on the heap via specifically crafted requests to SSLVPN, resulting in potentially arbitrary code execution.

Affected Products

FortiOS version 7.0.0 and below.
FortiOS version 6.4.5 and below.
FortiOS version 6.2.9 and below.
FortiOS version 6.0.12 and below.


Upgrade to FortiOS 7.0.1. 
Upgrade to FortiOS 6.4.6. 
Upgrade to FortiOS 6.2.10. 
Upgrade to FortiOS 6.0.13.

For new high-end F-Series Models (FG-1800F, FG-3800F, FG-4200F, FG-4400F) please upgrade to 6.2.9


Internally discovered and reported by Giuseppe Cocomazzi of Fortinet Product Security team.