CVE-2018-6851
Description
Sophos SafeGuard Enterprise before 8.00.5, SafeGuard Easy before 7.00.3, and SafeGuard LAN Crypt before 3.95.2 are vulnerable to Local Privilege Escalation via IOCTL 0x80206040. By crafting an input buffer we can control the execution path to the point where the constant DWORD 0 will be written to a user-controlled address. We can take advantage of this condition to zero-out the pointer to the security descriptor in the object header of a privileged process or modify the security descriptor itself and run code in the context of a process running as SYSTEM.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sophos safeguard_easy_device_encryption_client | 6.00, 6.10, 7.00 | — |
| sophos safeguard_enterprise_client | 5.60.3, 6.00, 6.00.1, 6.10, 7.00, 8.00 | — |
| sophos safeguard_lan_crypt_client | 3.90.1, 3.90.2, 3.95.1 | — |
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