Vulnerability identifier: #VU85417

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-2023-6340

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
NetExtender for Windows
Client/Desktop applications / Other client software
SonicWall Capture Client
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: SonicWall

Description

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

The vulnerability exists due to a boundary error when processing queries within the sfpmonitor.sys driver. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NetExtender for Windows: 10.2.0.300 - 10.2.336

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External links
http://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0019

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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.