First published: Mon Jul 09 2018(Updated: )
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 0x802022E0. By crafting an input buffer we can control the execution path to the point where the constant 0x12 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.
Credit: cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
Sophos SafeGuard Easy Device Encryption Client | =6.00 | |
Sophos SafeGuard Easy Device Encryption Client | =6.10 | |
Sophos SafeGuard Easy Device Encryption Client | =7.00 | |
Sophos Safeguard Enterprise Client | =5.60.3-vs-nfd | |
Sophos Safeguard Enterprise Client | =6.00 | |
Sophos Safeguard Enterprise Client | =6.00.1 | |
Sophos Safeguard Enterprise Client | =6.10 | |
Sophos Safeguard Enterprise Client | =7.00 | |
Sophos Safeguard Enterprise Client | =8.00 | |
Sophos Safeguard Lan Crypt Client | =3.90.1-ts | |
Sophos Safeguard Lan Crypt Client | =3.90.2 | |
Sophos Safeguard Lan Crypt Client | =3.95.1 | |
Sophos Safeguard Lan Crypt Client | =3.95.1-ts |
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CVE-2018-6857 is classified as a local privilege escalation vulnerability.
To remediate CVE-2018-6857, users should update to the latest versions of Sophos SafeGuard Enterprise, SafeGuard Easy, or SafeGuard LAN Crypt as listed by the vendor.
CVE-2018-6857 affects Sophos SafeGuard Enterprise versions before 8.00.5, SafeGuard Easy versions before 7.00.3, and SafeGuard LAN Crypt versions before 3.95.2.
CVE-2018-6857 exploits a vulnerability via IOCTL 0x802022E0, which allows for local privilege escalation through a crafted input buffer.
To determine if you are vulnerable to CVE-2018-6857, check the version of Sophos products installed against the versions listed as affected by this vulnerability.