Fortinet FortiWeb up to 6.3.15/6.4.1 Error redirect

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Fortinet FortiWeb up to 6.3.15/6.4.1. This impacts an unknown function of the component Error Handler. Executing a manipulation can lead to redirect. This vulnerability appears as CVE-2021-36191. The attack may be performed from remote. There is no available exploit. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability classified as problematic was found in Fortinet FortiWeb up to 6.3.15/6.4.1. This vulnerability affects an unknown function of the component Error Handler. The manipulation with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect integrity.

The weakness was presented 12/08/2021 as FG-IR-21-133. The advisory is shared for download at fortiguard.com. This vulnerability was named CVE-2021-36191 since 07/06/2021. 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 T1204.001.

The vulnerability scanner Nessus provides a plugin with the ID 209725 (Fortinet FortiWeb (FG-IR-21-133)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (209725). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.6

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

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 4.1
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209725
Nessus Name: Fortinet FortiWeb (FG-IR-21-133)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/06/2021 🔍
12/08/2021 +155 days 🔍
12/08/2021 +0 days 🔍
05/02/2025 +1241 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-21-133
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-36191 (🔍)
GCVE (CVE): GCVE-0-2021-36191
GCVE (VulDB): GCVE-100-187768

Entryinfo

Created: 12/08/2021 05:39 PM
Updated: 05/02/2025 08:32 PM
Changes: 12/08/2021 05:39 PM (27), 12/08/2021 05:40 PM (20), 12/11/2021 09:52 AM (2), 12/11/2021 09:54 AM (18), 12/11/2021 09:58 AM (1), 10/27/2024 02:04 AM (16), 05/02/2025 08:32 PM (4)
Complete: 🔍
Cache ID: 244:A40:40

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