SB2019091032 - Multiple privilege escalation vulnerabilities in Microsoft Windows
Published: September 10, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2019-1278)
The vulnerability allows a local user to escalate privilege so the system.
The vulnerability exists due to a boundary error in the unistore.dll when handling objects in memory. A local user can create a specially crafted application, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.
2) Input validation error (CVE-ID: CVE-2019-1277)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Windows Audio Service when a malformed parameter is processed.
A local user can create a specially crafted application and use this vulnerability in conjunction with another issue to escalate privileges on the system.
3) Buffer overflow (CVE-ID: CVE-2019-1272)
The vulnerability allows a local user to escalate privilege so the system.
The vulnerability exists due to a boundary error in the way Windows handles calls to Advanced Local Procedure Call (ALPC). A local user can create a specially crafted application, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.
4) Buffer overflow (CVE-ID: CVE-2019-1269)
The vulnerability allows a local user to escalate privilege so the system.
The vulnerability exists due to a boundary error in the way Windows handles calls to Advanced Local Procedure Call (ALPC). A local user can create a specially crafted application, trigger memory corruption and execute arbitrary code on the target system with elevated privileges.
5) Input validation error (CVE-ID: CVE-2019-1268)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to Winlogon service does not properly handle file path information. A local user can run a specially crafted application and execute arbitrary code on the system with elevated privileges.
6) Out-of-bounds write (CVE-ID: CVE-2019-1271)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the hdAudio.sys driver. A local user can run a specially crafted application to trigger out-of-bounds read and execute arbitrary code with elevated privileges.
7) Link following (CVE-ID: CVE-2019-1270)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Windows store installer handles symbolic link in WindowsApps directory. A local user can use this vulnerability to execute arbitrary code on the target system with elevated privileges.
8) Link following (CVE-ID: CVE-2019-1267)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Microsoft Compatibility Appraiser handles symbolic and hard links when reading configuration files. A local user can use this vulnerability to execute arbitrary code on the target system with elevated privileges.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1278
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1277
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1272
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1269
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1268
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1271
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1270
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1267