CVE-2014-3752 - Arbitrary Code Execution in G Data TotalProtection 2014 Jun 25 2014 02:07PM
Portcullis Advisories (advisories portcullis-security com)
Vulnerability title: Arbitrary Code Execution in G Data TotalProtection 2014
CVE: CVE-2014-3752
Vendor: G Data
Product: TotalProtection 2014
Affected version: v24.0.2.1
Fixed version: N/A
Reported by: Kyriakos Economou


G Data TotalProtection 2014 v24.0.2.1 and possibly earlier versions are
vulnerable to arbitrary code execution.
A local attacker is able to execute code as SYSTEM by exploiting a bug
in the MiniIcpt.sys (v1.013046.218) device driver.
Other software from the same vendor using the affected driver may also
be vulnerable to the same attack.

This vulnerability doesn?t currently allow elevation of privileges as
the attacker needs administrator rights to trigger the bug.

In particular, IOCTL 0×83170180 leads to:
OR ECX, -1

These two instructions are used to decrement a value stored in a memory
location pointed by EAX, but in this case the value of EAX can be
controlled through the IOCTL input buffer from userland.
Any value in writeable memory can be decremented at will by triggering
the vulnerability multiple times.

The challenge in a scenario like this is to find a pointer that could
later be used to control the EIP.
For example, a pointer to another function of the same module could be
used through another IOCTL, if that pointer is stored to a known address
such as in the range of the driver module itself.

Further details at:

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