Fortinet IPS Engine 6.158/7.166/7.321 TCP Packet access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Fortinet IPS Engine 6.158/7.166/7.321. This impacts an unknown function of the component TCP Packet Handler. Performing a manipulation results in access control. This vulnerability is reported as CVE-2023-40718. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Fortinet IPS Engine 6.158/7.166/7.321. This affects an unknown functionality of the component TCP Packet Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on integrity. The summary by CVE is:

A interpretation conflict in Fortinet IPS Engine versions 7.321, 7.166 and 6.158 allows attacker to evade IPS features via crafted TCP packets.

The weakness was disclosed 10/10/2023 as FG-IR-23-090. It is possible to read the advisory at fortiguard.com. This vulnerability is uniquely identified as CVE-2023-40718 since 08/21/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 209749 (Fortinet Fortigate IPS Engine evasion using custom TCP flags (FG-IR-23-090)), 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 (209749). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

CNA Base Score: 7.5
CNA Vector (Fortinet, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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: 209749
Nessus Name: Fortinet Fortigate IPS Engine evasion using custom TCP flags (FG-IR-23-090)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/21/2023 🔍
10/10/2023 +50 days 🔍
10/10/2023 +0 days 🔍
10/29/2024 +385 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: FG-IR-23-090
Status: Confirmed

CVE: CVE-2023-40718 (🔍)
GCVE (CVE): GCVE-0-2023-40718
GCVE (VulDB): GCVE-100-241767

Entryinfo

Created: 10/10/2023 19:39
Updated: 10/29/2024 15:41
Changes: 10/10/2023 19:39 (50), 10/29/2024 15:41 (17)
Complete: 🔍
Cache ID: 216::103

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

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