CVE-2018-6851: Buffer Overflow

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 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.

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

Remedy

https://community.sophos.com/kb/en-us/131934

Never miss a vulnerability like this again

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.