Multiple vulnerabilities in Microsoft Windows kernel



Published: 2018-12-11
Risk Low
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2018-8649
CVE-2018-8641
CVE-2018-8639
CVE-2018-8637
CVE-2018-8622
CVE-2018-8621
CVE-2018-8477
CWE-ID CWE-119
CWE-125
Exploitation vector Local
Public exploit Vulnerability #3 is being exploited in the wild.
Vulnerable software
Subscribe 		Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU16463

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8649

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary error n Windows kernel. A local unprivileged user can cause the Windows kernel to crash.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1809 10.0.17763.1

Windows Server: 2019 10.0.17763.1

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8649


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) Buffer overflow

EUVDB-ID: #VU16464

Risk: Low

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-2018-8641

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code with escalated privileges.

The vulnerability exists due to a boundary error in Windows kernel-mode driver win32k.sys. A local user can use a specially crafted application to execute arbitrary code with SYSTEM privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1809 10.0.17763.1

Windows Server: 2008 - 2019 1803

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8641


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) Memory corruption

EUVDB-ID: #VU16465

Risk: Low

CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2018-8639

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 vulnerability exists due to a boundary error in Windows kernel-mode driver win32k.sys. A local user can use a specially crafted application to execute arbitrary code with SYSTEM privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1809 10.0.17763.1

Windows Server: 2008 - 2019 1803

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8639


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.

4) Out-of-bounds read

EUVDB-ID: #VU16466

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8637

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition Windows kernel. A local user can run a specially crafted application to read contests from kernel memory and use the information to bypass Kernel Address Space Layout Randomization (KASLR) protection.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1803 10.0.17134.48 - 10 1809 10.0.17763.1

Windows Server: 2019 10.0.17763.1 - 2019 1803

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8637


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) Out-of-bounds read

EUVDB-ID: #VU16467

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8622

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Windows kernel. A local user can read contents of kernel memory.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 8.1 RT

Windows Server: 2008 - 2012 R2

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8622


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.

6) Out-of-bounds read

EUVDB-ID: #VU16468

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8621

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Windows kernel. A local user can read contents of kernel memory.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2008 R2 - 2012

Windows: 7

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8621


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.

7) Out-of-bounds read

EUVDB-ID: #VU16469

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8477

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Windows kernel. A local user can read contents of kernel memory.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1809 10.0.17763.1

Windows Server: 2008 - 2019 1803

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8477


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.



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