Fortinet FortiWLC ANSI X9.31 RNG 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 marked as critical has been reported in Fortinet FortiWLC. Affected is an unknown function of the component ANSI X9.31 RNG. This manipulation causes information disclosure. This vulnerability is tracked as CVE-2016-8492. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Fortinet FortiWLC (the affected version is unknown). It has been declared as critical. Affected by this vulnerability is an unknown code of the component ANSI X9.31 RNG. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The implementation of an ANSI X9.31 RNG in Fortinet FortiWLC allows attackers to gain unauthorized read access to data handled by the device via IPSec/TLS decryption.

The bug was discovered 11/09/2016. The weakness was disclosed 02/08/2017 by Matt (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2016-8492 since 10/07/2016. 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 T1592 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95440 (Fortinet FortiOS 4.3.x < 4.3.19 TLS and IPSEC Information Disclosure), 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 even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95440) and SecurityFocus (BID 94480†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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License

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: 5.6
VulDB Temp Score: 5.4
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: 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: 95440
Nessus Name: Fortinet FortiOS 4.3.x < 4.3.19 TLS and IPSEC Information Disclosure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/07/2016 🔍
11/09/2016 +33 days 🔍
11/22/2016 +13 days 🔍
11/22/2016 +0 days 🔍
12/01/2016 +9 days 🔍
02/08/2017 +69 days 🔍
02/08/2017 +0 days 🔍
02/08/2017 +0 days 🔍
09/01/2020 +1301 days 🔍

Sourcesinfo

Vendor: fortinet.com

Advisory: securityfocus.com⛔
Researcher: Matt
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8492 (🔍)
GCVE (CVE): GCVE-0-2016-8492
GCVE (VulDB): GCVE-100-96667
SecurityFocus: 94480 - Fortinet FortiOS CVE-2016-8492 Information Disclosure Vulnerability
OSVDB: - CVE-2016-8492 - Fortinet - FortiWLC - Hardcoded Account Issue

Entryinfo

Created: 02/08/2017 21:07
Updated: 09/01/2020 09:10
Changes: 02/08/2017 21:07 (64), 09/01/2020 09:10 (9)
Complete: 🔍
Cache ID: 216::103

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

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