Vulnerability identifier: #VU54601

Vulnerability risk: Low

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

CVE-ID: CVE-2021-21788

CWE-ID: CWE-782

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Advanced SystemCare Ultimate
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: IObit

Description

The vulnerability allows a local user to gain elevated privileges on the system.

The vulnerability exists the way IOBit Advanced SystemCare Ultimate driver handles Privileged I/O write requests within OUT word. A local user can use a specially crafted I/O request packet (IRP) and escalate privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Advanced SystemCare Ultimate: 14.2.0.220

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2021-1254

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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.