Siemens SIMATIC WinCC Sm@rtClient up to 1.0.2 improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Siemens SIMATIC WinCC Sm@rtClient up to 1.0.2 and classified as critical. This impacts an unknown function. Executing a manipulation can lead to improper authentication. The identification of this vulnerability is CVE-2017-6871. The physical device can be targeted for the attack. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Siemens SIMATIC WinCC Sm@rtClient up to 1.0.2 (SCADA Software). This vulnerability affects an unknown code. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability was discovered in Siemens SIMATIC WinCC Sm@rtClient for Android (All versions before V1.0.2.2) and SIMATIC WinCC Sm@rtClient for Android Lite (All versions before V1.0.2.2). An attacker with physical access to an unlocked mobile device, that has the affected app running, could bypass the app's authentication mechanism under certain conditions.

The bug was discovered 07/13/2017. The weakness was shared 08/08/2017 by Karsten Sohr (Website). The advisory is shared for download at siemens.com. This vulnerability was named CVE-2017-6871 since 03/13/2017. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 25 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.0.2.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 99582†). The entry VDB-105003 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

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Version

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

NVD Base Score: 5.4
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SIMATIC WinCC Sm@rtClient 1.0.2.2

Timelineinfo

03/13/2017 🔍
07/13/2017 +122 days 🔍
07/13/2017 +0 days 🔍
08/07/2017 +25 days 🔍
08/08/2017 +1 days 🔍
08/09/2017 +1 days 🔍
12/15/2022 +1954 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-589378
Researcher: Karsten Sohr
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-6871 (🔍)
GCVE (CVE): GCVE-0-2017-6871
GCVE (VulDB): GCVE-100-105004
SecurityFocus: 99582 - Siemens SIMATIC WinCC Sm@rtClient for Android ICSA-17-194-03 Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 08/09/2017 11:08
Updated: 12/15/2022 13:57
Changes: 08/09/2017 11:08 (65), 11/04/2019 20:03 (2), 12/15/2022 13:57 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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