Privilege escalation in Microsoft RMS Sharing App for Mac

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU26857

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1019

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

Exploit availability: No

Description

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

The vulnerability exists due to RMS Sharing App for Mac allows an attacker to load unsigned binaries. A remote authenticated attacker can gain elevated privileges on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

RMS Sharing for Mac: All versions

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1019

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.