7.5
HIGH
CVE-2016-3949
Siemens SIMATIC S7-300 Profinet DoS Denial of Service
Description

Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.

INFO

Published Date :

June 27, 2016, 10:59 a.m.

Last Modified :

Feb. 10, 2020, 3:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2016-3949 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Siemens simatic_s7-300_with_profitnet_support_firmware
2 Siemens simatic_s7-300_without_profitnet_support_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-3949.

URL Resource
http://www.securitytracker.com/id/1036089 Third Party Advisory VDB Entry
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-818183.pdf
https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01 Mitigation Third Party Advisory US Government Resource

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-3949 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-3949 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 10, 2020

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-818183.pdf [No Types Assigned]
  • Modified Analysis by [email protected]

    Aug. 18, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 AND OR cpe:2.3:h:siemens:simatic_s7-300_without_profitnet_support:*:*:*:*:*:*:*:* OR *cpe:2.3:o:siemens:simatic_s7-300_without_profitnet_support_firmware:3.3.11:*:*:*:*:*:*:* Configuration 2 AND OR *cpe:2.3:o:siemens:simatic_s7-300_with_profitnet_support_firmware:3.2.11:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_s7-300_with_profitnet_support:*:*:*:*:*:*:*:* Configuration 1 AND OR *cpe:2.3:o:siemens:simatic_s7-300_with_profitnet_support_firmware:3.2.11:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_s7-300_with_profitnet_support:*:*:*:*:*:*:*:* Configuration 2 AND OR cpe:2.3:h:siemens:simatic_s7-300_without_profitnet_support:*:*:*:*:*:*:*:* OR *cpe:2.3:o:siemens:simatic_s7-300_without_profitnet_support_firmware:3.3.11:*:*:*:*:*:*:*
    Changed Reference Type http://www.securitytracker.com/id/1036089 No Types Assigned http://www.securitytracker.com/id/1036089 Third Party Advisory, VDB Entry
    Changed Reference Type https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01 No Types Assigned https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01 Mitigation, Third Party Advisory, US Government Resource
  • CVE Modified by [email protected]

    Jul. 27, 2016

    Action Type Old Value New Value
    Added Reference https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01
  • CVE Modified by [email protected]

    Jul. 26, 2016

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1036089
  • Modified Analysis by [email protected]

    Jun. 28, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 AND OR cpe:2.3:h:siemens:simatic_s7-300_without_profitnet_support:*:*:*:*:*:*:*:* OR *cpe:2.3:o:siemens:simatic_s7-300_without_profitnet_support_firmware:3.3.11:*:*:*:*:*:*:* Configuration 2 AND OR *cpe:2.3:o:siemens:simatic_s7-300_with_profitnet_support_firmware:3.2.11:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_s7-300_with_profitnet_support:*:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdf No Types Assigned http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdf Advisory
    Added CWE CWE-399
  • Initial Analysis by [email protected]

    Jun. 28, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-3949 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-3949 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.42 }} 0.00%

score

0.70023

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability