Fortinet FortiOS up to 5.2.11/up to 5.4.5/5.6.0 Reflected 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.
5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Fortinet FortiOS up to 5.2.11/up to 5.4.5/5.6.0. This affects an unknown function. Performing a manipulation results in cross site scripting (Reflected). This vulnerability is reported as CVE-2017-7739. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Fortinet FortiOS up to 5.2.11/up to 5.4.5/5.6.0 (Firewall Software). This affects some unknown processing. The manipulation with an unknown input leads to a cross site scripting vulnerability (Reflected). 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 bug was discovered 11/03/2017. The weakness was disclosed 11/03/2017 by Serge Ivanov and Dhiraj Datar as FG-IR-17-168 as confirmed advisory (Website). It is possible to read the advisory at fortiguard.com. The public release has been coordinated in cooperation with Fortinet. This vulnerability is uniquely identified as CVE-2017-7739 since 04/12/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK. The advisory points out:

A reflected XSS vulnerability exists in FortiOS web proxy disclaimer response web pages, potentially exploitable by an unauthenticated attacker, via sending a maliciously crafted URL to the victim. The victim visiting the malicious URL would then have arbitrary javascript code executed in the security context of her/his browser.

The vulnerability scanner Nessus provides a plugin with the ID 104657 (Fortinet FortiOS 5.2.x < 5.2.23 / 5.4.x < 5.4.6 / 5.6.x < 5.6.1 Web Proxy Disclaimer Response Page Reflected XSS (FG-IR-17-168)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Firewalls and running in the context l.

Upgrading to version 5.2.12, 5.4.6 or 5.6.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104657), SecurityFocus (BID 101679†) and SecurityTracker (ID 1039741†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Reflected
Class: Cross site scripting / Reflected
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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 104657
Nessus Name: Fortinet FortiOS 5.2.x < 5.2.23 / 5.4.x < 5.4.6 / 5.6.x < 5.6.1 Web Proxy Disclaimer Response Page Reflected XSS (FG-IR-17-168)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FortiOS 5.2.12/5.4.6/5.6.1

Timelineinfo

04/12/2017 🔍
11/03/2017 +205 days 🔍
11/03/2017 +0 days 🔍
11/03/2017 +0 days 🔍
11/03/2017 +0 days 🔍
11/07/2017 +4 days 🔍
11/08/2017 +1 days 🔍
11/13/2017 +5 days 🔍
11/17/2017 +4 days 🔍
01/23/2021 +1163 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-17-168
Researcher: Serge Ivanov, Dhiraj Datar
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2017-7739 (🔍)
GCVE (CVE): GCVE-0-2017-7739
GCVE (VulDB): GCVE-100-109227
SecurityFocus: 101679 - Fortinet FortiOS CVE-2017-7739 Cross Site Scripting Vulnerability
SecurityTracker: 1039741

Entryinfo

Created: 11/08/2017 13:24
Updated: 01/23/2021 09:19
Changes: 11/08/2017 13:24 (76), 12/05/2019 09:58 (5), 01/23/2021 09:19 (2)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!