PT-2018-17780 · Sophos · Sophos Safeguard Enterprise+2

Kyriakos Economou · Published 2018-07-09 · Updated 2019-10-03 · CVE-2018-6855

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Sophos SafeGuard Enterprise versions prior to 8.00.5 Sophos SafeGuard Easy versions prior to 7.00.3 Sophos SafeGuard LAN Crypt versions prior to 3.95.2

Description The issue allows for Local Privilege Escalation via IOCTL 0x80202014. By crafting an input buffer, an attacker can control the execution path, allowing them to write a constant value to a user-controlled address. This can be used to modify the SEP TOKEN PRIVILEGES structure of the Token object, granting the SE DEBUG NAME privilege. This privilege enables the exploit process to interact with higher-privileged processes running as SYSTEM and execute code in their security context.

Recommendations For Sophos SafeGuard Enterprise versions prior to 8.00.5, update to version 8.00.5 or later. For Sophos SafeGuard Easy versions prior to 7.00.3, update to version 7.00.3 or later. For Sophos SafeGuard LAN Crypt versions prior to 3.95.2, update to version 3.95.2 or later.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2018-6855

Affected Products

Sophos Safeguard Easy

Sophos Safeguard Enterprise

Sophos Safeguard Lan Crypt

References · 5

• 🔥 https://labs.nettitude.com/blog/cve-2018-6851-to-cve-2018-6857-sophos-privilege-escalation-vulnerabilities · Exploit
• https://community.sophos.com/kb/en-us/131934 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-6855 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-6855 · Security Note
• http://seclists.org/fulldisclosure/2018/Jul/20 · Note