#VU7042 Information disclosure in Windows and Windows Server - CVE-2017-0300

Vulnerability identifier: #VU7042

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-0300

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description
The vulnerability allows a local authenticated attacker to obtain potentially sensitive information on the target system.

The weakness exists due to improper initialization of memory address by the Windows kernel. A local attacker can run a specially crafted application to retrieve the base address of the kernel driver from a compromised process and bypass Kernel Address Space Layout Randomization (KASLR).

Successful exploitation of the vulnerability may result in security bypass.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8.1 RT - 8.1, 10

Windows Server: 2008 R2 - 2008, 2012 R2 - 2012, 2016 10.0.14393.10

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0300

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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.