Stored XSS in FortiWeb reports

Published: 2019-06-13 | Updated: 2019-06-13
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-5590
CWE ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software Fortinet FortiWeb Subscribe
Vendor Fortinet, Inc

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Stored cross-site scripting

Severity: Medium

CVSSv3: 6.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-5590

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when displaying attack report elements. A remote attacker can send specially crafted payload that will be executed in victim's browser once the victim views the attack report in HTML format.

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

Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiWeb: 6.0.0, 6.0.1, 6.0.2

CPE External links

https://fortiguard.com/psirt/FG-IR-19-070

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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