SB2020041408 - Multiple vulnerabilities in Microsoft Win32k
Published: April 14, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2020-0962)
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.
2) Buffer overflow (CVE-ID: CVE-2020-0958)
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 Windows kernel-mode driver. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.
3) Buffer overflow (CVE-ID: CVE-2020-0957)
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 Windows kernel-mode driver. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.
4) Buffer overflow (CVE-ID: CVE-2020-0956)
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 Windows kernel-mode driver. A local user can create a malicious application, launch it on the system and execute arbitrary code with SYSTEM privileges.
5) Out-of-bounds read (CVE-ID: CVE-2020-0699)
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.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0962
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0958
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0957
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0956
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0699