A vulnerability was found in Fortinet FortiOS up to 7.4.2 (Firewall Software). It has been declared as very critical. This vulnerability affects an unknown code block of the component SSL-VPN. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 02/09/2024 as FG-IR-24-015. The advisory is available at fortiguard.com. This vulnerability was named CVE-2024-21762 since 01/02/2024. Technical details are unknown but an exploit is available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/02/2024).

It is declared as highly functional. As 0-day the estimated underground price was around $25k-$100k. This issue was added on 02/09/2024 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 02/16/2024:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Upgrading to version 6.2.16, 6.4.15, 7.0.14, 7.2.7 or 7.4.3 eliminates this vulnerability.

Additional details are provided at tenable.com.

Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiOS

Version

• 6.0
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7
• 6.2.8
• 6.2.9
• 6.2.10
• 6.2.11
• 6.2.12
• 6.2.13
• 6.2.14
• 6.2.15
• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6
• 6.4.7
• 6.4.8
• 6.4.9
• 6.4.10
• 6.4.11
• 6.4.12
• 6.4.13
• 6.4.14
• 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
• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6
• 7.4.0
• 7.4.1
• 7.4.2

License

• commercial

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