Fortinet FortiProxy/FortiOS up to 7.0.18/7.2.10/7.4.3 IP Address Validation incorrect parsing of numbers with different radices

Summaryinfo

A vulnerability was found in Fortinet FortiProxy and FortiOS up to 7.0.18/7.2.10/7.4.3 and classified as problematic. This issue affects some unknown processing of the component IP Address Validation. Executing a manipulation can lead to incorrect parsing of numbers with different radices. This vulnerability is handled as CVE-2024-26015. The attack can only be done within the local network. There is not any exploit available.

Detailsinfo

A vulnerability was found in Fortinet FortiProxy and FortiOS up to 7.0.18/7.2.10/7.4.3. It has been declared as problematic. This vulnerability affects an unknown code of the component IP Address Validation. The manipulation with an unknown input leads to a incorrect parsing of numbers with different radices vulnerability. The CWE definition for the vulnerability is CWE-1389. The product parses numeric input assuming base 10 (decimal) values, but it does not account for inputs that use a different base number (radix). As an impact it is known to affect integrity. CVE summarizes:

An incorrect parsing of numbers with different radices vulnerability [CWE-1389] in FortiProxy version 7.4.3 and below, version 7.2.10 and below, version 7.0.17 and below and FortiOS version 7.4.3 and below, version 7.2.8 and below, version 7.0.15 and below IP address validation feature may permit an unauthenticated attacker to bypass the IP blocklist via crafted requests.

The advisory is shared for download at fortiguard.fortinet.com. This vulnerability was named CVE-2024-26015 since 02/14/2024. The exploitation appears to be difficult. The attack needs to be initiated within the local network. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/09/2024).

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

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Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiOS
• FortiProxy

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 7.0.13
• 7.0.14
• 7.0.15
• 7.0.16
• 7.0.17
• 7.0.18
• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.2.7
• 7.2.8
• 7.2.9
• 7.2.10
• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3

License

• commercial

Website

• Vendor: https://www.fortinet.com/

CPE 2.3info

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