VDB-101796 · CVE-2016-8497 · BID 97478

Fortinet FortiOS 5.4.3 FortiClient SSL_VPN Linux access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Fortinet FortiOS 5.4.3. This affects an unknown part of the component FortiClient SSL_VPN Linux. The manipulation results in access control. This vulnerability is identified as CVE-2016-8497. There is not any exploit available.

Detailsinfo

A vulnerability was found in Fortinet FortiOS 5.4.3 (Firewall Software). It has been classified as critical. Affected is some unknown functionality of the component FortiClient SSL_VPN Linux. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An escalation of privilege vulnerability in Fortinet FortiClient SSL_VPN Linux versions available with FortiOS 5.4.3 and below allows an attacker to gain root privilege via the subproc file.

The bug was discovered 04/05/2017. The weakness was released 05/27/2017 (Website). The advisory is shared for download at fortiguard.com. This vulnerability is traded as CVE-2016-8497 since 10/07/2016. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 51 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 97478†). Entry connected to this vulnerability is available at VDB-101795. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/07/2016 🔍
04/05/2017 +180 days 🔍
04/05/2017 +0 days 🔍
05/26/2017 +51 days 🔍
05/27/2017 +1 days 🔍
05/27/2017 +0 days 🔍
12/25/2020 +1308 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: fortiguard.com
Researcher: Grzegorz Wrobel
Status: Not defined

CVE: CVE-2016-8497 (🔍)
GCVE (CVE): GCVE-0-2016-8497
GCVE (VulDB): GCVE-100-101796
SecurityFocus: 97478 - FortiClient SSLVPN CVE-2016-8497 Privilege Escalation Vulnerability
OSVDB: - Fortinet FortiClient SSLVPN for Linux privilege escalation

See also: 🔍

Entryinfo

Created: 05/27/2017 09:46
Updated: 12/25/2020 17:05
Changes: 05/27/2017 09:46 (44), 10/03/2020 12:53 (5), 12/25/2020 16:59 (8), 12/25/2020 17:05 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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