PSIRTNull pointer dereference in sslvnd
Summary
A NULL pointer dereference vulnerability [CWE-476] in FortiOS may allow a remote unauthenticated attacker to crash the SSL-VPN daemon via specially crafted HTTP requests.
| Version | Affected | Solution |
|---|---|---|
| FortiOS 7.4 | Not affected | Not Applicable |
| FortiOS 7.2 | 7.2.0 through 7.2.4 | Upgrade to 7.2.5 or above |
| FortiOS 7.0 | 7.0.0 through 7.0.11 | Upgrade to 7.0.12 or above |
| FortiOS 6.4 | 6.4.0 through 6.4.12 | Upgrade to 6.4.13 or above |
| FortiOS 6.2 | 6.2.0 through 6.2.14 | Upgrade to 6.2.15 or above |
| FortiOS 6.0 | 6.0.0 through 6.0.16 | Upgrade to 6.0.17 or above |
| FortiProxy 7.2 | 7.2.0 through 7.2.3 | Upgrade to 7.2.4 or above |
| FortiProxy 7.0 | 7.0.0 through 7.0.10 | Upgrade to 7.0.11 or above |
| FortiProxy 2.0 | 2.0.0 through 2.0.12 | Upgrade to 2.0.13 or above |
| FortiProxy 1.2 | 1.2 all versions | Migrate to a fixed release |
| FortiProxy 1.1 | 1.1 all versions | Migrate to a fixed release |
| FortiProxy 1.0 | 1.0 all versions | Migrate to a fixed release |
Acknowledgement
Internally discovered and reported by Gwendal Guégniaud of Fortinet Product Security team in the frame of an internal audit of the SSL-VPN component.Timeline
2023-06-12: Initial publication