#VU5668 Security bypass in Windows and Windows Server - CVE-2015-2433

Vulnerability identifier: #VU5668

Vulnerability risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2015-2433

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 vulnerabiity allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to improper initialization of a memory address by Windows kernel. A local attacker can create a specially crafted application, execute it on the system, bypass Kernel Address Space Layout Randomization (KASLR) and obtain arbitrary information.

Successful exploitation of this vulnerability results in disclosure of sensitive information.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Windows: Vista, RT, 7, 8 - 8.1, 10

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

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External links
https://technet.microsoft.com/en-us/library/security/ms15-080.aspx

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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, a fully functional exploit for this vulnerability is available.