Privilege escalation in Microsoft Jet Red Database Engine and Access Connectivity Engine

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58948

Risk: Medium

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

CVE-ID: CVE-2021-42293

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in Microsoft Jet Red Database Engine and Access Connectivity Engine, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2013 - 2019

Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems

Microsoft Office LTSC 2021: 32 bit editions - 64 bit editions

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42293

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.