10.0
CRITICAL
CVE-2013-6920
Siemens SINAMICS S/G FTP/Telnet Authentication Bypass Vulnerability
Description

Siemens SINAMICS S/G controllers with firmware before 4.6.11 do not require authentication for FTP and TELNET sessions, which allows remote attackers to bypass intended access restrictions via TCP traffic to port (1) 21 or (2) 23.

INFO

Published Date :

Dec. 7, 2013, 12:55 a.m.

Last Modified :

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

Remotely Exploitable :

Yes !

Impact Score :

10.0

Exploitability Score :

10.0
Affected Products

The following products are affected by CVE-2013-6920 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 sinamics_s\/g_family_firmware
2 Siemens sinamics_g110
3 Siemens sinamics_g110d
4 Siemens sinamics_g120
5 Siemens sinamics_g120c
6 Siemens sinamics_g120d
7 Siemens sinamics_g120p
8 Siemens sinamics_g130
9 Siemens sinamics_g150
10 Siemens sinamics_g180
11 Siemens sinamics_s110
12 Siemens sinamics_s120
13 Siemens sinamics_s120cm
14 Siemens sinamics_s150
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-2013-6920.

URL Resource
http://ics-cert.us-cert.gov/advisories/ICSA-13-338-01 US Government Resource
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-742938.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-742938.pdf

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-2013-6920 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2013-6920 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-742938.pdf [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 09, 2013

    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-2013-6920 is associated with the following CWEs:

Exploit Prediction

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

0.69 }} 0.00%

score

0.76972

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability