1) Out-of-bounds read

Severity: Low

CVSSv3: 3.3 [CVSS:3.0/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-2019-1091

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 when handling objects in memory within Unistore.dll. A local user can create a specially crafted application and gain access to memory contents of an elevated process.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, 10 1903

Windows Server: 1803, 1903, 2016, 2019

CPE

• cpe:/a:microsoft:windows:10:
• cpe:/a:microsoft:windows:10 1607:
• cpe:/a:microsoft:windows:10 1703:
• cpe:/a:microsoft:windows:10 1709:
• cpe:/a:microsoft:windows:10 1803:
• cpe:/a:microsoft:windows:10 1809:
• cpe:/a:microsoft:windows:10 1903:
• cpe:/a:microsoft:windows_server:2016:
• cpe:/a:microsoft:windows_server:2019:
• cpe:/a:microsoft:windows_server:1803:
• cpe:/a:microsoft:windows_server:1903:

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1091

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.