Information Disclosure in WildFire Appliance (WF-500)

Published: 2019-07-09

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-3665
CWE-ID	CWE-200
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	WildFire Appliance (WF-500) Hardware solutions / Security hardware applicances Palo Alto PAN-OS Operating systems & Components / Operating system
Vendor	Palo Alto Networks, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Side-channel attack

EUVDB-ID: #VU13337

Risk: Low

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

CVE-ID: CVE-2018-3665

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to utilizing the Lazy FP state restore technique for floating point state when context switching between application processes. A local attacker can conduct cache side-channel attacks and determine register values of other processes.

Note: This vulnerability is known as LazyFP.

Mitigation

Update your WildFire Appliance (WF-500) to PAN-OS version 8.1.9, 8.0.18 or 9.0.0.

Users running PAN-OS version 7.1.x are advised to contact support.

Vulnerable software versions

WildFire Appliance (WF-500): All versions

Palo Alto PAN-OS: 7.1.0 - 8.1.8-h5

External links

http://securityadvisories.paloaltonetworks.com/Home/Detail/154

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.