CVE Vulnerabilities

CVE-2017-11849

Exposure of Sensitive Information to an Unauthorized Actor

Published: Nov 15, 2017 | Modified: Dec 01, 2017
CVSS 3.x
4.7
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
1.9 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu

Windows kernel in Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and RT 8.1, Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to log in and run a specially crafted application due to the Windows kernel improperly initializing a memory address, aka Windows Kernel Information Disclosure Vulnerability. This CVE ID is unique from CVE-2017-11842, CVE-2017-11851, and CVE-2017-11853.

Weakness

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Software

Name Vendor Start Version End Version
Windows_10 Microsoft * *
Windows_10 Microsoft 1511 (including) 1511 (including)
Windows_10 Microsoft 1607 (including) 1607 (including)
Windows_10 Microsoft 1703 (including) 1703 (including)
Windows_10 Microsoft 1709 (including) 1709 (including)
Windows_7 Microsoft * *
Windows_8.1 Microsoft * *
Windows_rt_8.1 Microsoft * *
Windows_server_2008 Microsoft * *
Windows_server_2008 Microsoft r2-sp1 (including) r2-sp1 (including)
Windows_server_2012 Microsoft * *
Windows_server_2012 Microsoft r2 (including) r2 (including)
Windows_server_2016 Microsoft * *

Extended Description

There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:

Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:

Information exposures can occur in different ways:

It is common practice to describe any loss of confidentiality as an “information exposure,” but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References