Denial of service in Palo Alto GlobalProtect app



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3038
CWE-ID CWE-248
Exploitation vector Local
Public exploit N/A
Vulnerable software
 GlobalProtect Agent
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor Palo Alto Networks, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Uncaught exception

EUVDB-ID: #VU52224

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3038

CWE-ID: CWE-248 - Uncaught Exception

Exploit availability: No

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

CPE2.3 External links

https://security.paloaltonetworks.com/CVE-2021-3038


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.



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