Known Exploited Vulnerability
7.5
HIGH
CVE-2016-8562
Siemens SIMATIC CP 1543-1 Improper Privilege Manag - [Actively Exploited]
Description

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.

INFO

Published Date :

Nov. 18, 2016, 9:59 p.m.

Last Modified :

July 24, 2024, 2:26 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.6
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

An improper privilege management vulnerability exists within the Siemens SIMATIC Communication Processor (CP) that allows a privileged attacker to remotely cause a denial of service.

Required Action :

Apply updates per vendor instructions.

Public PoC/Exploit Available at Github

CVE-2016-8562 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-8562 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_cp_1543-1_firmware
2 Siemens siplus_net_cp_1543-1_firmware
3 Siemens simatic_cp_1543-1
4 Siemens siplus_net_cp_1543-1
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-2016-8562.

URL Resource
http://www.securityfocus.com/bid/94436 Broken Link Third Party Advisory VDB Entry
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken Link Patch Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 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).

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 2 months, 2 weeks ago
516 stars 32 fork 32 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1181 different CVEs too.

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

The following list is the news that have been mention CVE-2016-8562 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-8562 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.

  • Modified Analysis by [email protected]

    Jul. 24, 2024

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.securityfocus.com/bid/94436 Third Party Advisory, VDB Entry http://www.securityfocus.com/bid/94436 Broken Link, Third Party Advisory, VDB Entry
    Changed Reference Type http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Patch, Vendor Advisory http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken Link, Patch, Vendor Advisory
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory
    Changed Reference Type https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 No Types Assigned https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 Third Party Advisory, US Government Resource
    Removed CWE NIST CWE-20
    Added CWE NIST NVD-CWE-noinfo
    Changed CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_cp_1543-1:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.28 OR cpe:2.3:h:siemens:simatic_cp_1543-1:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:siemens:siplus_net_cp_1543-1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.28 OR cpe:2.3:h:siemens:siplus_net_cp_1543-1:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Apr. 12, 2022

    Action Type Old Value New Value
    Changed Description A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service. A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.
    Removed CWE MITRE CWE-20
  • CVE Modified by [email protected]

    Apr. 12, 2022

    Action Type Old Value New Value
    Changed Description Siemens SIMATIC CP 1543-1 before 2.0.28, when SNMPv3 write access or SNMPv1 is enabled, allows remote authenticated users to cause a denial of service by modifying SNMP variables. A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.
    Added CWE MITRE CWE-20
  • CVE Modified by [email protected]

    Feb. 10, 2020

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 22, 2016

    Action Type Old Value New Value
    Added Reference https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 02, 2016

    Action Type Old Value New Value
    Changed Reference Type http://www.securityfocus.com/bid/94436 No Types Assigned http://www.securityfocus.com/bid/94436 Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/94436 [No Types Assigned]
  • Initial Analysis by [email protected]

    Nov. 22, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 AND OR *cpe:2.3:o:siemens:simatic_cp_1543-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_cp_1543-1:-:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:M/Au:S/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf No Types Assigned http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Vendor Advisory, Patch
    Added CWE CWE-20
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-2016-8562 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-2016-8562 weaknesses.

Exploit Prediction

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

1.61 }} 0.80%

score

0.87572

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability