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CVE-2018-6851

Status Candidate

Overview

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.

Related Files

Sophos SafeGuard Priivlege Escalation
Posted Jul 4, 2018
Authored by Kyriakos Economou

Sophos SafeGuard Enterprise versions 8.00.4 and earlier, SafeGuard Easy versions 7.00.2.35 and earlier, and SafeGuard LAN Crypt versions 3.95.1.13 and earlier suffer from privilege escalation vulnerabilities.

tags | advisory, vulnerability
advisories | CVE-2018-6851, CVE-2018-6852, CVE-2018-6853, CVE-2018-6854, CVE-2018-6855, CVE-2018-6856, CVE-2018-6857
SHA-256 | 9d5c7e91f7c46dfdf969ae19225d278303fd9a6345ad15d65c8e24018ea0b127
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