Vulnerability identifier: #VU58669

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-2021-20047

CWE-ID: CWE-428

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
SonicWall Global VPN client
Client/Desktop applications / Encryption software

Vendor: SonicWall

Description

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

The vulnerability exists due to insecure way of searching and loading DLL libraries. A local user can place a specially crafted DLL library onto the system and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SonicWall Global VPN client: 4.10.0 - 4.10.6.0913

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External links
http://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0025

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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.