Privilege escalation in Microsoft File Server Shadow Copy Agent Service (RVSS)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU64340

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-30154

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

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly impose security restrictions in Microsoft File Server Shadow Copy Agent Service (RVSS), which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2003 - 2022 20H2

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-30154

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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