VDB-299931 · CVE-2019-6697 · FG-IR-19-184

Fortinet FortiOS up to 6.2.1 DHCP Hostname 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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Fortinet FortiOS up to 6.2.1. Impacted is an unknown function of the component DHCP Handler. Performing a manipulation of the argument Hostname results in cross site scripting. This vulnerability is identified as CVE-2019-6697. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Fortinet FortiOS up to 6.2.1. It has been classified as problematic. This affects some unknown functionality of the component DHCP Handler. The manipulation of the argument hostname with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

An Improper Neutralization of Input vulnerability affecting FortiGate version 6.2.0 through 6.2.1, 6.0.0 through 6.0.6 in the hostname parameter of a DHCP packet under DHCP monitor page may allow an unauthenticated attacker in the same network as the FortiGate to perform a Stored Cross Site Scripting attack (XSS) by sending a crafted DHCP packet.

It is possible to read the advisory at fortiguard.com. This vulnerability is uniquely identified as CVE-2019-6697 since 01/23/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Firewall Software

Vendor

Fortinet

Name

FortiOS

Version

License

commercial

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (fortinet): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

01/23/2019 🔍
03/17/2025 +2245 days 🔍
03/17/2025 +0 days 🔍
07/25/2025 +129 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-19-184
Status: Confirmed

CVE: CVE-2019-6697 (🔍)
GCVE (CVE): GCVE-0-2019-6697
GCVE (VulDB): GCVE-100-299931

Entryinfo

Created: 03/17/2025 15:18
Updated: 07/25/2025 01:08
Changes: 03/17/2025 15:18 (66), 07/25/2025 01:08 (12)
Complete: 🔍
Cache ID: 216::103