Fortinet FortiOS/FortiProxy DNS Filter security check

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Fortinet FortiOS and FortiProxy. Affected is an unknown function of the component DNS Filter. This manipulation causes security check. This vulnerability is handled as CVE-2024-55599. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Fortinet FortiOS and FortiProxy (version now known) and classified as problematic. Affected by this vulnerability is some unknown processing of the component DNS Filter. The manipulation with an unknown input leads to a security check vulnerability. The CWE definition for the vulnerability is CWE-358. The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique. As an impact it is known to affect integrity. The summary by CVE is:

An Improperly Implemented Security Check for Standard vulnerability [CWE-358] in FortiOS version 7.6.0, version 7.4.7 and below, 7.0 all versions, 6.4 all versions and FortiProxy version 7.6.1 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions may allow a remote unauthenticated user to bypass the DNS filter via Apple devices.

It is possible to read the advisory at fortiguard.fortinet.com. This vulnerability is known as CVE-2024-55599 since 12/09/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1211 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 241531 (Fortinet Fortigate DNS type 65 resource record requests bypass DNS filter (FG-IR-24-053)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (241531). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (fortinet): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Security check
CWE: CWE-358
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241531
Nessus Name: Fortinet Fortigate DNS type 65 resource record requests bypass DNS filter (FG-IR-24-053)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/09/2024 🔍
07/08/2025 +210 days 🔍
07/08/2025 +0 days 🔍
07/22/2025 +14 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-24-053
Status: Confirmed

CVE: CVE-2024-55599 (🔍)
GCVE (CVE): GCVE-0-2024-55599
GCVE (VulDB): GCVE-100-315391

Entryinfo

Created: 07/08/2025 17:22
Updated: 07/22/2025 18:45
Changes: 07/08/2025 17:22 (63), 07/09/2025 11:53 (2), 07/22/2025 18:45 (1)
Complete: 🔍
Cache ID: 216::103

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

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