Multiple vulnerabilities in Microsoft Windows



| Updated: 2017-02-15
Risk Medium
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2016-7214
CVE-2016-7215
CVE-2016-7218
CVE-2016-7246
CVE-2016-7255
CWE-ID CWE-119
Exploitation vector Local
Public exploit Vulnerability #5 is being exploited in the wild.
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 5 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU5323

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7214

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to boundary error when handling objects by the kernel. A local attacker can run a specially crafted program, trigger memory corruption, gain access to important data allowing to bypass Kernel Address Space Layout Randomization (ASLR).

Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: Vista - 10

Windows Server: 2008 R2 - 2016 10.0.14393.10

CPE2.3 External links

http://technet.microsoft.com/en-us/library/security/ms16-135


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) Privilege escalation

EUVDB-ID: #VU5324

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7215

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to gain elevated privileges on the target system.

The weakness is due to improper handling of objects in memory by win32k.sys. By running a specially crafted program, a local attacker can trigger memory corruption and execute arbitrary code with system privileges.

Successful explotation of the vulnerability results in privilege escalation.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: Vista - 10

Windows Server: 2008 R2 - 2016 10.0.14393.10

CPE2.3 External links

http://technet.microsoft.com/en-us/library/security/ms16-135


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.

3) Information disclosure

EUVDB-ID: #VU5325

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7218

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to improper handling of objects in memory by bowser.sys. A local attacker can execute a specially crafted program and gain access to important data on the affected system.

Successful exploitation of the vulnerability results in information disclosure on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: Vista - 10

Windows Server: 2008 R2 - 2016 10.0.14393.10

CPE2.3 External links

http://technet.microsoft.com/en-us/library/security/ms16-135


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.

4) Privilege escalation

EUVDB-ID: #VU5326

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7246

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to gain elevated privileges on the target system.

The weakness is due to improper handling of objects in memory in win32k.sys. By running a specially crafted program, a local attacker can trigger memory corruption and execute arbitrary code with system privileges.

Successful explotation of the vulnerability results in privilege escalation.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10

Windows Server: 2008 R2 - 2016 10.0.14393.10

CPE2.3 External links

http://technet.microsoft.com/en-us/library/security/ms16-135


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.

5) Privilege escalation

EUVDB-ID: #VU1116

Risk: Medium

CVSSv3.1: 8.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:U/RC:C]

CVE-ID: CVE-2016-7255

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a local user to gain elevated privileges on the target system.

The weakness is due to improper handling of objects in memory by win32k.sys. By sending a specially crafted system call NtSetWindowLongPtr(), a local attacker can set index GWLP_ID to WS_CHILD value on a window handle with GWL_STYLE and execute arbitrary code with system privileges.

Successful explotation of the vulnerability results in privilege escalation.

Note: this vulnerability is being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: Vista - 10

Windows Server: 2008 R2 - 2016 10.0.14393.10

CPE2.3 External links

http://security.googleblog.com/2016/10/disclosing-vulnerabilities-to-protect.html
http://technet.microsoft.com/library/security/MS16-135


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?

Yes. This vulnerability is being exploited in the wild.



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