Detections
Analytics
Siemens LOGO! Insufficiently Protected Credentials (CVE-2017-12734)
high Tenable OT Security Plugin ID 501682
Synopsis
The remote OT asset is affected by a vulnerability.Description
A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V1.81.2). An attacker with network access to the integrated web server on port 80/tcp could obtain the session ID of an active user session. A user must be logged in to the web interface. Siemens recommends to use the integrated webserver on port 80/tcp only in trusted networks.This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.
Solution
The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.Siemens provides LOGO!8 BM FS-05 with firmware Version 1.81.2, which fixes the first Insufficiently Protected Credentials vulnerability.
Siemens recommends users update to v8.3 to mitigate the Man-in-the-Middle vulnerability.
NOTE: To update, a new hardware version is required.
Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
- Configure the environment according to the recommendations in the Siemens user manual.
- Apply cell protection concept.
- Use VPN for protecting network communication between cells.
- Apply defense-in-depth.
As a general security measure, Siemens strongly recommends protecting network access to the devices with appropriate mechanisms. Siemens advises configuring the environment according to Siemens operational guidelines to run the devices in a protected IT environment.
For more information on these vulnerabilities and more detailed mitigation instructions, please see Siemens Security Advisory SSA-087240
See Also
http://www.securityfocus.com/bid/100560
https://cert-portal.siemens.com/productcert/pdf/ssa-087240.pdf
https://www.cisa.gov/news-events/ics-advisories/icsa-17-243-02
Plugin Details
Severity: High
ID: 501682
Version: 1.8
Type: remote
Family: Tenable.ot
Published: 9/21/2023
Updated: 11/26/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2017-12734
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:siemens:logo%218_bm_fs-05_firmware
Required KB Items: Tenable.ot/Siemens
Exploit Ease: No known exploits are available
Patch Publication Date: 8/30/2017
Vulnerability Publication Date: 8/30/2017
Reference Information
CVE: CVE-2017-12734