Fortinet FortiWeb up to 6.3.19/7.0.1 XML stack-based overflow

Summaryinfo

A vulnerability was found in Fortinet FortiWeb up to 6.3.19/7.0.1. It has been classified as critical. This impacts an unknown function of the component XML Handler. The manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2023-23781. Access to the local network is required for this attack to succeed. There is no exploit available.

Detailsinfo

A vulnerability was found in Fortinet FortiWeb up to 6.3.19/7.0.1. It has been rated as critical. This issue affects an unknown code block of the component XML Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A stack-based buffer overflow vulnerability [CWE-121] in FortiWeb version 7.0.1 and below, 6.4 all versions, version 6.3.19 and below SAML server configuration may allow an authenticated attacker to achieve arbitrary code execution via specifically crafted XML files.

The weakness was shared 02/16/2023. It is possible to read the advisory at fortiguard.com. The identification of this vulnerability is CVE-2023-23781 since 01/18/2023. 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 03/16/2023).

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

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

Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiWeb

Version

• 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
• 6.3.16
• 6.3.17
• 6.3.18
• 6.3.19
• 7.0.0
• 7.0.1

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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CPE 2.2info

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