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CVE-2018-6855

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 0x80202014. By crafting an input buffer we can control the execution path to the point where the constant 0xFFFFFFF will be written to a user-controlled address. We can take advantage of this condition to modify the SEP_TOKEN_PRIVILEGES structure of the Token object belonging to the exploit process and grant SE_DEBUG_NAME privilege. This allows the exploit process to interact with higher privileged processes running as SYSTEM and execute code in their security context.

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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