Fortinet FortiOS up to 5.2.10 Session 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Fortinet FortiOS. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Session Handler. Performing a manipulation results in 7pk security. This vulnerability is cataloged as CVE-2016-7541. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Fortinet FortiOS (Firewall Software). This affects an unknown function of the component Session Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on integrity. The summary by CVE is:

Long lived sessions in Fortinet FortiGate devices with FortiOS 5.x before 5.4.0 could violate a security policy during IPS signature updates when the FortiGate's IPSengine is configured in flow mode. All FortiGate versions with IPS configured in proxy mode (the default mode) are not affected.

The bug was discovered 03/30/2017. The weakness was shared 03/30/2017 (Website). It is possible to read the advisory at fortiguard.com. This vulnerability is uniquely identified as CVE-2016-7541 since 09/09/2016. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 95439 (Fortinet FortiOS 5.x < 5.4.2 Flow-mode Detection Bypass), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Firewalls and running in the context l.

Upgrading to version 5.4.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95439) and SecurityFocus (BID 94477†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
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: 95439
Nessus Name: Fortinet FortiOS 5.x < 5.4.2 Flow-mode Detection Bypass
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FortiOS 5.4.0

Timelineinfo

09/09/2016 🔍
11/22/2016 +74 days 🔍
11/22/2016 +0 days 🔍
12/01/2016 +9 days 🔍
03/30/2017 +119 days 🔍
03/30/2017 +0 days 🔍
03/30/2017 +0 days 🔍
03/31/2017 +1 days 🔍
01/11/2020 +1016 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: fortiguard.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7541 (🔍)
GCVE (CVE): GCVE-0-2016-7541
GCVE (VulDB): GCVE-100-99099
SecurityFocus: 94477 - Fortinet FortiOS CVE-2016-7541 Security Bypass Vulnerability

Entryinfo

Created: 03/31/2017 09:24
Updated: 01/11/2020 07:53
Changes: 03/31/2017 09:24 (67), 01/11/2020 07:53 (5)
Complete: 🔍
Cache ID: 216::103

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

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