#VU31365 Cross-site scripting in Palo Alto PAN-OS - CVE-2017-16878

Vulnerability identifier: #VU31365

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-16878

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

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

Vendor: Palo Alto Networks, Inc.

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in the Captive Portal function in Palo Alto Networks PAN-OS before 8.0.7. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Update to version 8.0.7.

Vulnerable software versions

Palo Alto PAN-OS: 8.0.0 - 8.0.6

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External links
https://www.securitytracker.com/id/1040148
https://security.paloaltonetworks.com/CVE-2017-16878

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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.