Fortinet FortiWeb up to 6.2.5/6.3.15/6.4.0 Webserver Daemon resource consumption

Summaryinfo

A vulnerability identified as problematic has been detected in Fortinet FortiWeb up to 6.2.5/6.3.15/6.4.0. The impacted element is an unknown function of the component Webserver Daemon. This manipulation causes resource consumption. The identification of this vulnerability is CVE-2021-36187. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Fortinet FortiWeb up to 6.2.5/6.3.15/6.4.0. It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component Webserver Daemon. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability.

The weakness was shared 11/03/2021 as FG-IR-21-039. The advisory is shared at fortiguard.com. This vulnerability is known as CVE-2021-36187 since 07/06/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 209797 (Fortinet FortiWeb (FG-IR-21-039)), 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 (209797). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiWeb

Version

• 6.0
• 6.1
• 6.2
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.3
• 6.3.0
• 6.3.1
• 6.3.2
• 6.3.3
• 6.3.4
• 6.3.5
• 6.3.6
• 6.3.7
• 6.3.8
• 6.3.9
• 6.3.10
• 6.3.11
• 6.3.12
• 6.3.13
• 6.3.14
• 6.3.15
• 6.4.0

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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