Vulnerability identifier: #VU52224

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3038

CWE-ID: CWE-248

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
GlobalProtect Agent
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Palo Alto Networks, Inc.

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to uncaught exception in Windows VPN kernel driver. A local user can pass specifically-crafted input to the GlobalProtect app that results in a Windows blue screen of death (BSOD) error.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GlobalProtect Agent: 5.1.0 - 5.2.3

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External links
http://security.paloaltonetworks.com/CVE-2021-3038

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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.