Advantech B+B SmartWorx MESR901 up to 1.5.2 Web Interface Client improper authentication

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	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.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Advantech B+B SmartWorx MESR901 up to 1.5.2. This vulnerability affects unknown code of the component Web Interface. The manipulation leads to improper authentication (Client). This vulnerability is referenced as CVE-2017-7909. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Advantech B+B SmartWorx MESR901 up to 1.5.2 and classified as critical. This issue affects an unknown code of the component Web Interface. The manipulation with an unknown input leads to a improper authentication vulnerability (Client). Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A Use of Client-Side Authentication issue was discovered in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior. The web interface uses JavaScript to check client authentication and redirect unauthorized users. Attackers may intercept requests and bypass authentication to access restricted web pages.

The bug was discovered 05/02/2017. The weakness was published 05/06/2017 by Maxim Rupp (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2017-7909 since 04/18/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 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 98257†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Advantech B+B SmartWorx

Name

• MESR901

Version

• 1.5.0
• 1.5.1
• 1.5.2

License

• commercial

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Name: Client
Class: Improper authentication / Client
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

OpenVAS ID: 802155
OpenVAS Name: Advantech MESR901 Authentication Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/18/2017 🔍
05/02/2017 +14 days 🔍
05/02/2017 +0 days 🔍
05/05/2017 +3 days 🔍
05/06/2017 +1 days 🔍
05/06/2017 +0 days 🔍
09/24/2020 +1237 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Maxim Rupp
Status: Not defined

CVE: CVE-2017-7909 (🔍)
GCVE (CVE): GCVE-0-2017-7909
GCVE (VulDB): GCVE-100-100895
SecurityFocus: 98257 - Advantech B+B SmartWorx MESR901 CVE-2017-7909 Authentication Bypass Vulnerability
OSVDB: - Advantech B+B SmartWorx MESR901 security bypass

Entryinfo

Created: 05/06/2017 18:32
Updated: 09/24/2020 09:53
Changes: 05/06/2017 18:32 (64), 09/24/2020 09:53 (5)
Complete: 🔍
Cache ID: 216::103

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

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