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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Siemens SIMATIC S7-1200 up to 3.x. Affected is an unknown function of the component User Program Block Handler. The manipulation leads to 7pk security. This vulnerability is uniquely identified as CVE-2016-2846. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Siemens SIMATIC S7-1200 up to 3.x (SCADA Software). It has been rated as critical. This issue affects some unknown functionality of the component User Program Block Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Siemens SIMATIC S7-1200 CPU devices before 4.0 allow remote attackers to bypass a "user program block" protection mechanism via unspecified vectors.

The weakness was disclosed 03/16/2016 by Ralf Spenneberg (Website). The advisory is shared at siemens.com. The identification of this vulnerability is CVE-2016-2846 since 03/06/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1211 for this issue.

Upgrading to version 4.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 84346†) and Vulnerability Center (SBV-57657†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• SCADA Software

Vendor

• Siemens

Name

• SIMATIC S7-1200

Version

• 3.x

License

• commercial

Website

• Vendor: https://www.siemens.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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

Class: 7pk security
CWE: CWE-254
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SIMATIC S7-1200 4.0

Timelineinfo

03/06/2016 🔍
03/14/2016 +8 days 🔍
03/16/2016 +2 days 🔍
03/16/2016 +0 days 🔍
03/16/2016 +0 days 🔍
03/17/2016 +1 days 🔍
03/23/2016 +6 days 🔍
07/10/2022 +2300 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-833048
Researcher: Ralf Spenneberg
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2846 (🔍)
GCVE (CVE): GCVE-0-2016-2846
GCVE (VulDB): GCVE-100-81377
SecurityFocus: 84346 - Siemens SIMATIC S7-1200 CVE-2016-2846 Security Bypass Vulnerability
Vulnerability Center: 57657 - Siemens SIMATIC S7-1200 CPU Devices before 4.0 Remote Security Restrictions Bypass, Medium

Entryinfo

Created: 03/17/2016 11:02
Updated: 07/10/2022 13:53
Changes: 03/17/2016 11:02 (57), 02/02/2019 11:28 (13), 07/10/2022 13:53 (3)
Complete: 🔍
Cache ID: 216:495:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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