VDB-299912 · CVE-2019-15706 · FG-IR-19-223

Fortinet FortiProxy/FortiOS SSL VPN Portal cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Fortinet FortiProxy and FortiOS and classified as problematic. This affects an unknown function of the component SSL VPN Portal. Such manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2019-15706. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Fortinet FortiProxy and FortiOS (the affected version is unknown) and classified as problematic. Affected by this issue is an unknown code of the component SSL VPN Portal. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

An improper neutralization of input during web page generation in the SSL VPN portal of FortiProxy version 2.0.0, version 1.2.9 and below and FortiOS version 6.2.1 and below, version 6.0.8 and below, version 5.6.12 may allow a remote authenticated attacker to perform a stored cross site scripting attack (XSS).

The advisory is shared for download at fortiguard.fortinet.com. This vulnerability is handled as CVE-2019-15706 since 08/27/2019. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Firewall Software

Vendor

Fortinet

Name

License

commercial

Website

Vendor: https://www.fortinet.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 4.1
CNA Vector (fortinet): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/27/2019 🔍
03/17/2025 +2029 days 🔍
03/17/2025 +0 days 🔍
07/25/2025 +129 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-19-223
Status: Confirmed

CVE: CVE-2019-15706 (🔍)
GCVE (CVE): GCVE-0-2019-15706
GCVE (VulDB): GCVE-100-299912

Entryinfo

Created: 03/17/2025 14:45
Updated: 07/25/2025 01:08
Changes: 03/17/2025 14:45 (64), 07/25/2025 01:08 (12)
Complete: 🔍
Cache ID: 216::103