Fortinet FortiWeb up to 6.2.6/6.3.15/6.4.1 LogReport API Controller heap-based overflow

Summaryinfo

A vulnerability classified as critical has been found in Fortinet FortiWeb up to 6.2.6/6.3.15/6.4.1. Affected is an unknown function of the component LogReport API Controller. This manipulation causes heap-based overflow. The identification of this vulnerability is CVE-2021-43071. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Fortinet FortiWeb up to 6.2.6/6.3.15/6.4.1 and classified as critical. Affected by this vulnerability is some unknown processing of the component LogReport API Controller. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 12/09/2021 as FG-IR-21-188. It is possible to read the advisory at fortiguard.com. This vulnerability is known as CVE-2021-43071 since 10/28/2021. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/27/2024).

The vulnerability scanner Nessus provides a plugin with the ID 209728 (Fortinet FortiWeb (FG-IR-21-188)), 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 (209728). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiWeb

Version

• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 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
• 6.4.1

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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