PC-Doctor Toolbox DLL Hijacking

Full Disclosure

I. VULNERABILITY
-------------------------
Uncontrolled search path element vulnerability in PC-Doctor Toolbox prior
to version 7.3 allows local users to gain Full Disclosure

I. VULNERABILITY
-------------------------
Uncontrolled search path element vulnerability in PC-Doctor Toolbox prior
to version 7.3 allows local users to gain privileges and conduct DLL
hijacking attacks via a trojan horse DLL located in an unsecured directory
which has been added to the PATH environment variable.



II. CVE REFERENCE
-------------------------
CVE-2019-12280



III. VENDOR
-------------------------
PC-Doctor, Inc.



IV. Affected Products

-------------------------

PC-Doctor Toolbox for Windows

Also re-branded as:

CORSAIR ONE Diagnostics
CORSAIR Diagnostics
Staples EasyTech Diagnostics
Tobii I-Series Diagnostic Tool
Tobii Dynavox Diagnostic Tool



V. TIMELINE
-------------------------
May 03, 2019 Vulnerability reported to PC-Doctor, Inc.

May 04, 2019 Vulnerability confirmed by PC-Doctor, Inc.

May 17, 2019 PC-Doctor, Inc. identified additional attack vectors in third
party dependencies.

June 11, 2019 PC-Doctor Toolbox for Windows 7.3 released to OEM customers
for testing.

June 12, 2019 PC-Doctor Toolbox for Windows 7.3 released to retail
end-users.

June 19, 2019 Disclosure published.



VI. CREDIT
-------------------------
Peleg Hadar from SafeBreach, Inc.



VII. SOLUTION
-------------------------
Upgrade to version 7.3 of PC-Doctor Toolbox (or re-branded products)