ID CVE-2017-11830
Summary Device Guard in Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to make an unsigned file appear to be signed, due to a security feature bypass, aka "Device Guard Security Feature Bypass Vulnerability".
References
Vulnerable Configurations
  • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_10:1511:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_10:1511:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server:1709:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_server:1709:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
CVSS
Base: 4.6 (as of 03-10-2019 - 00:03)
Impact:
Exploitability:
CWE CWE-367
CAPEC
  • Leveraging Race Conditions via Symbolic Links
    This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to her. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file she will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
cvss-vector via4 AV:L/AC:L/Au:N/C:P/I:P/A:P
refmap via4
bid 101714
confirm https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11830
exploit-db 43162
sectrack 1039790
Last major update 03-10-2019 - 00:03
Published 15-11-2017 - 03:29
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