Multiple vulnerabilities in Microsoft Win32k



Published: 2020-03-10 | Updated: 2022-09-18
Risk Low
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-0788
CVE-2020-0887
CVE-2020-0877
CVE-2020-0876
CWE-ID CWE-119
CWE-125
Exploitation vector Local
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU25908

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-0788

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing objects in memory within the Win32k component. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1909

Windows Server: 2008 - 2019 1909


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0788

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Buffer overflow

EUVDB-ID: #VU25906

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-0887

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing objects in memory within the Win32k component. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1909

Windows Server: 2008 - 2019 1909


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0887

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Buffer overflow

EUVDB-ID: #VU25904

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-0877

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing objects in memory within the Win32k component. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1909

Windows Server: 2008 - 2019 1909


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0877

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

4) Out-of-bounds read

EUVDB-ID: #VU25901

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-0876

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 within the win32k component. A local user can use a specially crafted application to trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10 1903 - 10 1909

Windows Server: 2019 1903 - 2019 1909


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0876

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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