Vulnerability identifier: #VU7588

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8390

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Palo Alto PAN-OS
Operating systems & Components / Operating system

Vendor: Palo Alto Networks, Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to an unspecified error when processing fully qualified domain name (FQDN) in the DNS Proxy . A remote attacker can send send a specially crafted DNS request to the  DNS Proxy and execute arbitrary code on vulnerable device.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable device.

Mitigation
Update to version 6.1.18, 7.0.16, 7.1.10 or 8.0.3.

Vulnerable software versions

Palo Alto PAN-OS: 6.1.0 - 6.1.17, 7.0.0 - 7.0.15, 7.1.0 - 7.1.10, 8.0.0 - 8.0.2

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External links
http://securityadvisories.paloaltonetworks.com/Home/Detail/91

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.