Security Update for Windows Kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2016-3258 CVE-2016-3272 |
| CWE-ID | CWE-229 CWE-200 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Windows file system security feature bypass
EUVDB-ID: #VU121
Risk: Low
CVSSv4.0: 0.5 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2016-3258
CWE-ID:
CWE-229 - Improper Handling of Values
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to bypass certain security restrictions.
The vulnerability exists in windows kernel due to an error, which can be used to bypass file path-based checks from a low integrity application using time of check time of use (TOCTOU) issues. A local attacker can potentially modify files outside of a low integrity level application.
Successful exploitation of this vulnerability requires usage of another vulnerability, which allows to compromise the sandbox process from a low integrity application.
MitigationInstall updates from Microsoft website.
Vulnerable software versionsWindows: 8.1 - 10
Windows Server: 2012 - 2012 R2
CPE2.3- cpe:2.3:o:microsoft:windows:8.1:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:8.1_RT:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server:2012_R2:*:*:*:*:*:*:*
https://technet.microsoft.com/en-us/library/security/MS16-092
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Windows kernel information disclosure vulnerability
EUVDB-ID: #VU122
Risk: Low
CVSSv4.0: 2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2016-3272
CWE-ID:
CWE-200 - Exposure of sensitive information to an unauthorized actor
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to gain access to potentially sensitive information.
The vulnerability exists due to incorrect handling of certain page fault system calls in Windows kernel. A local user can disclose information from another process.
Successful exploitation of this vulnerability may allow a local attacker to gain access to potentially sensitive information.
MitigationInstall updates from Microsoft website.
Vulnerable software versionsWindows: 8.1 - 10
Windows Server: 2012 - 2012 R2
CPE2.3- cpe:2.3:o:microsoft:windows:8.1:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows:8.1_RT:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server:2012_R2:*:*:*:*:*:*:*
https://technet.microsoft.com/en-us/library/security/MS16-092
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
