Fortinet FortiOS up to 5.2/5.4.2/5.6.2 SSL VPN Web Portal Session information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Fortinet FortiOS up to 5.2/5.4.2/5.6.2. Affected by this issue is some unknown functionality of the component SSL VPN Web Portal Session Handler. Such manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2017-7738. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Fortinet FortiOS up to 5.2/5.4.2/5.6.2 (Firewall Software). It has been rated as problematic. Affected by this issue is some unknown functionality of the component SSL VPN Web Portal Session Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

An Information Disclosure vulnerability in Fortinet FortiOS 5.6.0 to 5.6.2, 5.4.0 to 5.4.5, 5.2 and below versions allow an admin user with super_admin privileges to view the current SSL VPN web portal session info which may contains user credentials through the fnsysctl CLI command.

The bug was discovered 05/15/2017. The weakness was disclosed 12/13/2017 (Website). The advisory is shared for download at fortiguard.com. This vulnerability is handled as CVE-2017-7738 since 04/12/2017. The attack may be launched remotely. A simple authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability was handled as a non-public zero-day exploit for at least 212 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110415 (Fortinet FortiGate <= 5.2.x / 5.4.x < 5.4.9 / 5.6.x < 5.6.3 Multiple Vulnerabilities (FG-IR-17-231, FG-IR-17-245 and FG-IR-17-172)), 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 eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110415) and SecurityFocus (BID 102151†). The entries VDB-118158 and VDB-118205 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
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: Information disclosure
CWE: CWE-200 / 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: 110415
Nessus Name: Fortinet FortiGate <= 5.2.x / 5.4.x < 5.4.9 / 5.6.x < 5.6.3 Multiple Vulnerabilities (FG-IR-17-231, FG-IR-17-245 and FG-IR-17-172)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

04/12/2017 🔍
05/15/2017 +33 days 🔍
12/12/2017 +211 days 🔍
12/13/2017 +1 days 🔍
12/13/2017 +0 days 🔍
12/14/2017 +1 days 🔍
05/18/2018 +155 days 🔍
06/08/2018 +21 days 🔍
01/27/2021 +964 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: fortiguard.com
Researcher: Jean-Noel Meurisse, Solvay S.A.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7738 (🔍)
GCVE (CVE): GCVE-0-2017-7738
GCVE (VulDB): GCVE-100-110672
SecurityFocus: 102151 - Fortinet FortiOS CVE-2017-7738 Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 12/14/2017 07:55
Updated: 01/27/2021 11:50
Changes: 12/14/2017 07:55 (66), 12/15/2019 08:45 (10), 01/27/2021 11:50 (2)
Complete: 🔍
Cache ID: 216::103

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