Access of NULL pointer in SSLVPNd

Summary

An access of uninitialized pointer vulnerability [CWE-824] in the SSL-VPN portal of FortiOS & FortiProxy may allow a remote authenticated attacker to crash the sslvpn daemon via an HTTP GET request.

Affected Products

FortiOS version 7.2.0 through 7.2.3
FortiOS version 7.0.0 through 7.0.9
FortiOS version 6.4.0 through 6.4.11
FortiOS version 6.2.0 through 6.2.13

FortiProxy version 7.2.0 through 7.2.1
FortiProxy version 7.0.0 through 7.0.7
FortiProxy version 2.0.0 through 2.0.11
FortiProxy 1.2 all versions
FortiProxy 1.1 all versions

Solutions

Please upgrade to FortiOS version 7.2.4 or above
Please upgrade to FortiOS version 7.0.10 or above
Please upgrade to FortiOS version 6.4.12 or above
Please upgrade to FortiOS version 6.2.14 or above
Please upgrade to FortiProxy version 7.2.2 or above
Please upgrade to FortiProxy version 7.0.8 or above
Please upgrade to FortiProxy version 2.0.12 or above

FortiSASE is no longer impacted, issue remediated Q4/22

Acknowledgement

Internally discovered and reported by Théo Leleu of Fortinet Product Security team.